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530084881 = 2918278789
BaseRepresentation
bin11111100110000…
…111010000010001
31100221110002202101
4133212013100101
52041200204011
6124333320401
716064434654
oct3746072021
91327402671
10530084881
11252245687
12129636101
1385a898c1
145058789b
153180c2c1
hex1f987411

530084881 has 4 divisors (see below), whose sum is σ = 548363700. Its totient is φ = 511806064.

The previous prime is 530084869. The next prime is 530084899. The reversal of 530084881 is 188480035.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 421070400 + 109014481 = 20520^2 + 10441^2 .

It is a cyclic number.

It is not a de Polignac number, because 530084881 - 215 = 530052113 is a prime.

It is a super-2 number, since 2×5300848812 = 561979962129568322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 530084881.

It is not an unprimeable number, because it can be changed into a prime (530084981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9139366 + ... + 9139423.

It is an arithmetic number, because the mean of its divisors is an integer number (137090925).

Almost surely, 2530084881 is an apocalyptic number.

It is an amenable number.

530084881 is a deficient number, since it is larger than the sum of its proper divisors (18278819).

530084881 is a wasteful number, since it uses less digits than its factorization.

530084881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18278818.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 530084881 is about 23023.5722901551. The cubic root of 530084881 is about 809.3104332965.

It can be divided in two parts, 530084 and 881, that added together give a triangular number (530965 = T1030).

The spelling of 530084881 in words is "five hundred thirty million, eighty-four thousand, eight hundred eighty-one".

Divisors: 1 29 18278789 530084881