57011828 has 6 divisors (see below), whose sum is σ = 99770706. Its totient is φ = 28505912.

The previous prime is 57011819. The next prime is 57011861. The reversal of 57011828 is 82811075.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 31225744 + 25786084 = 5588^2 + 5078^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57011794 and 57011803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7126475 + ... + 7126482.

It is an arithmetic number, because the mean of its divisors is an integer number (16628451).

Almost surely, 2^57011828 is an apocalyptic number.

It is an amenable number.

57011828 is a deficient number, since it is larger than the sum of its proper divisors (42758878).

57011828 is a wasteful number, since it uses less digits than its factorization.

57011828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14252961 (or 14252959 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 57011828 is about 7550.6177230741. The cubic root of 57011828 is about 384.8767312114.

The spelling of 57011828 in words is "fifty-seven million, eleven thousand, eight hundred twenty-eight".