57136478 has 8 divisors (see below), whose sum is σ = 97948272. Its totient is φ = 24487056.

The previous prime is 57136463. The next prime is 57136481. The reversal of 57136478 is 87463175.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2040575 + ... + 2040602.

It is an arithmetic number, because the mean of its divisors is an integer number (12243534).

Almost surely, 2^57136478 is an apocalyptic number.

57136478 is a deficient number, since it is larger than the sum of its proper divisors (40811794).

57136478 is a wasteful number, since it uses less digits than its factorization.

57136478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4081186.

The product of its digits is 141120, while the sum is 41.

The square root of 57136478 is about 7558.8675077686. The cubic root of 57136478 is about 385.1570237093.

The spelling of 57136478 in words is "fifty-seven million, one hundred thirty-six thousand, four hundred seventy-eight".