74257057 has 8 divisors (see below), whose sum is σ = 84920256. Its totient is φ = 63607632.

The previous prime is 74257033. The next prime is 74257063. The reversal of 74257057 is 75075247.

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 74257057 - 2⁷ = 74256929 is a prime.

It is a super-2 number, since 2×74257057² = 11028221028602498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74257357) 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, 14058 + ... + 18604.

It is an arithmetic number, because the mean of its divisors is an integer number (10615032).

Almost surely, 2^74257057 is an apocalyptic number.

It is an amenable number.

74257057 is a deficient number, since it is larger than the sum of its proper divisors (10663199).

74257057 is a wasteful number, since it uses less digits than its factorization.

74257057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6887.

The product of its (nonzero) digits is 68600, while the sum is 37.

The square root of 74257057 is about 8617.2534487504. The cubic root of 74257057 is about 420.3192149957.

The spelling of 74257057 in words is "seventy-four million, two hundred fifty-seven thousand, fifty-seven".