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530377881 = 31171226367
BaseRepresentation
bin11111100111001…
…110110010011001
31100221222222200020
4133213032302121
52041234043011
6124343501053
716100065125
oct3747166231
91327888606
10530377881
11252425830
12129757789
1385b60087
1450622585
1531869006
hex1f9cec99

530377881 has 16 divisors (see below), whose sum is σ = 782327808. Its totient is φ = 316912400.

The previous prime is 530377879. The next prime is 530377889. The reversal of 530377881 is 188773035.

It is a cyclic number.

It is not a de Polignac number, because 530377881 - 21 = 530377879 is a prime.

It is a super-2 number, since 2×5303778812 = 562601393308100322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (530377889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110841 + ... + 115526.

It is an arithmetic number, because the mean of its divisors is an integer number (48895488).

Almost surely, 2530377881 is an apocalyptic number.

It is an amenable number.

530377881 is a deficient number, since it is larger than the sum of its proper divisors (251949927).

530377881 is a wasteful number, since it uses less digits than its factorization.

530377881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226452.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 530377881 is about 23029.9344549653. The cubic root of 530377881 is about 809.4595190302.

The spelling of 530377881 in words is "five hundred thirty million, three hundred seventy-seven thousand, eight hundred eighty-one".

Divisors: 1 3 11 33 71 213 781 2343 226367 679101 2490037 7470111 16072057 48216171 176792627 530377881