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7150081 = 17420593
BaseRepresentation
bin11011010001101000000001
3111110021001211
4123101220001
53312300311
6413130121
7114526501
oct33215001
914407054
107150081
114043a64
122489941
131634623
14d41a01
15963821
hex6d1a01

7150081 has 4 divisors (see below), whose sum is σ = 7570692. Its totient is φ = 6729472.

The previous prime is 7150027. The next prime is 7150103. The reversal of 7150081 is 1800517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1800517 = 10611697.

It can be written as a sum of positive squares in 2 ways, for example, as 3837681 + 3312400 = 1959^2 + 1820^2 .

It is a cyclic number.

It is not a de Polignac number, because 7150081 - 213 = 7141889 is a prime.

It is a super-2 number, since 2×71500812 = 102247316613122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7150681) 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, 210280 + ... + 210313.

It is an arithmetic number, because the mean of its divisors is an integer number (1892673).

Almost surely, 27150081 is an apocalyptic number.

It is an amenable number.

7150081 is a deficient number, since it is larger than the sum of its proper divisors (420611).

7150081 is a wasteful number, since it uses less digits than its factorization.

7150081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420610.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 7150081 is about 2673.9635375225. The cubic root of 7150081 is about 192.6505798813.

Adding to 7150081 its reverse (1800517), we get a palindrome (8950598).

The spelling of 7150081 in words is "seven million, one hundred fifty thousand, eighty-one".

Divisors: 1 17 420593 7150081