57050731 has 4 divisors (see below), whose sum is σ = 57236872. Its totient is φ = 56864592.

The previous prime is 57050717. The next prime is 57050761. The reversal of 57050731 is 13705075.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57050731 - 2⁹ = 57050219 is a prime.

It is a super-2 number, since 2×57050731² = 6509571815268722, which contains 22 as substring.

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 57050731.

It is not an unprimeable number, because it can be changed into a prime (57050761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92610 + ... + 93223.

It is an arithmetic number, because the mean of its divisors is an integer number (14309218).

Almost surely, 2^57050731 is an apocalyptic number.

57050731 is a deficient number, since it is larger than the sum of its proper divisors (186141).

57050731 is a wasteful number, since it uses less digits than its factorization.

57050731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186140.

The product of its (nonzero) digits is 3675, while the sum is 28.

The square root of 57050731 is about 7553.1934305961. The cubic root of 57050731 is about 384.9642537228.

The spelling of 57050731 in words is "fifty-seven million, fifty thousand, seven hundred thirty-one".