57123812 has 12 divisors (see below), whose sum is σ = 104313216. Its totient is φ = 27320040.

The previous prime is 57123811. The next prime is 57123817. The reversal of 57123812 is 21832175.

It is a super-2 number, since 2×57123812² = 6526259794822688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57123811) 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, 310364 + ... + 310547.

It is an arithmetic number, because the mean of its divisors is an integer number (8692768).

Almost surely, 2^57123812 is an apocalyptic number.

It is an amenable number.

57123812 is a deficient number, since it is larger than the sum of its proper divisors (47189404).

57123812 is a wasteful number, since it uses less digits than its factorization.

57123812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620938 (or 620936 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 57123812 is about 7558.0296374121. The cubic root of 57123812 is about 385.1285611021.

Adding to 57123812 its reverse (21832175), we get a palindrome (78955987).

The spelling of 57123812 in words is "fifty-seven million, one hundred twenty-three thousand, eight hundred twelve".