57055238 has 16 divisors (see below), whose sum is σ = 90596880. Its totient is φ = 26902176.

The previous prime is 57055237. The next prime is 57055241. The reversal of 57055238 is 83255075.

It is a junction number, because it is equal to n+sod(n) for n = 57055198 and 57055207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57055237) 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 7 ways as a sum of consecutive naturals, for example, 8945 + ... + 13932.

It is an arithmetic number, because the mean of its divisors is an integer number (5662305).

Almost surely, 2^57055238 is an apocalyptic number.

57055238 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

57055238 is a deficient number, since it is larger than the sum of its proper divisors (33541642).

57055238 is a wasteful number, since it uses less digits than its factorization.

57055238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22951.

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 57055238 is about 7553.4917753315. The cubic root of 57055238 is about 384.9743908305.

The spelling of 57055238 in words is "fifty-seven million, fifty-five thousand, two hundred thirty-eight".