57161505 has 8 divisors (see below), whose sum is σ = 91458432. Its totient is φ = 30486128.

The previous prime is 57161483. The next prime is 57161527. The reversal of 57161505 is 50516175.

It is an interprime number because it is at equal distance from previous prime (57161483) and next prime (57161527).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57161505 - 2⁸ = 57161249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1905369 + ... + 1905398.

It is an arithmetic number, because the mean of its divisors is an integer number (11432304).

Almost surely, 2^57161505 is an apocalyptic number.

It is an amenable number.

57161505 is a deficient number, since it is larger than the sum of its proper divisors (34296927).

57161505 is a wasteful number, since it uses less digits than its factorization.

57161505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810775.

The product of its (nonzero) digits is 5250, while the sum is 30.

The square root of 57161505 is about 7560.5227993837. The cubic root of 57161505 is about 385.2132511732.

The spelling of 57161505 in words is "fifty-seven million, one hundred sixty-one thousand, five hundred five".