57161345 has 8 divisors (see below), whose sum is σ = 69031464. Its totient is φ = 45437184.

The previous prime is 57161341. The next prime is 57161359. The reversal of 57161345 is 54316175.

It can be written as a sum of positive squares in 4 ways, for example, as 2534464 + 54626881 = 1592^2 + 7391^2 .

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 57161345 - 2² = 57161341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57161341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35624 + ... + 37193.

It is an arithmetic number, because the mean of its divisors is an integer number (8628933).

Almost surely, 2^57161345 is an apocalyptic number.

It is an amenable number.

57161345 is a deficient number, since it is larger than the sum of its proper divisors (11870119).

57161345 is a wasteful number, since it uses less digits than its factorization.

57161345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72979.

The product of its digits is 12600, while the sum is 32.

The square root of 57161345 is about 7560.5122180974. The cubic root of 57161345 is about 385.2128917578.

It can be divided in two parts, 571 and 61345, that added together give a palindrome (61916).

The spelling of 57161345 in words is "fifty-seven million, one hundred sixty-one thousand, three hundred forty-five".