57157782 has 32 divisors (see below), whose sum is σ = 129012480. Its totient is φ = 16722720.

The previous prime is 57157733. The next prime is 57157787. The reversal of 57157782 is 28775175.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57157787) 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 15 ways as a sum of consecutive naturals, for example, 13018 + ... + 16845.

It is an arithmetic number, because the mean of its divisors is an integer number (4031640).

Almost surely, 2^57157782 is an apocalyptic number.

57157782 is an abundant number, since it is smaller than the sum of its proper divisors (71854698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57157782 is a wasteful number, since it uses less digits than its factorization.

57157782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29908.

The product of its digits is 137200, while the sum is 42.

The square root of 57157782 is about 7560.2765822422. The cubic root of 57157782 is about 385.2048878521.

The spelling of 57157782 in words is "fifty-seven million, one hundred fifty-seven thousand, seven hundred eighty-two".