76161557 has 16 divisors (see below), whose sum is σ = 83223360. Its totient is φ = 69455232.

The previous prime is 76161551. The next prime is 76161563. The reversal of 76161557 is 75516167.

It is an interprime number because it is at equal distance from previous prime (76161551) and next prime (76161563).

It is a cyclic number.

It is not a de Polignac number, because 76161557 - 2⁸ = 76161301 is a prime.

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 76161557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76161551) 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, 59003 + ... + 60279.

It is an arithmetic number, because the mean of its divisors is an integer number (5201460).

Almost surely, 2^76161557 is an apocalyptic number.

It is an amenable number.

76161557 is a deficient number, since it is larger than the sum of its proper divisors (7061803).

76161557 is a wasteful number, since it uses less digits than its factorization.

76161557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412.

The product of its digits is 44100, while the sum is 38.

The square root of 76161557 is about 8727.0588974751. The cubic root of 76161557 is about 423.8822893992.

The spelling of 76161557 in words is "seventy-six million, one hundred sixty-one thousand, five hundred fifty-seven".