57121282 has 32 divisors (see below), whose sum is σ = 94639104. Its totient is φ = 25766400.

The previous prime is 57121279. The next prime is 57121283. The reversal of 57121282 is 28212175.

It is a self number, because there is not a number n which added to its sum of digits gives 57121282.

It is not an unprimeable number, because it can be changed into a prime (57121283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57978 + ... + 58954.

It is an arithmetic number, because the mean of its divisors is an integer number (2957472).

Almost surely, 2^57121282 is an apocalyptic number.

57121282 is a deficient number, since it is larger than the sum of its proper divisors (37517822).

57121282 is a wasteful number, since it uses less digits than its factorization.

57121282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074.

The product of its digits is 2240, while the sum is 28.

The square root of 57121282 is about 7557.8622638945. The cubic root of 57121282 is about 385.1228752675.

The spelling of 57121282 in words is "fifty-seven million, one hundred twenty-one thousand, two hundred eighty-two".