57001938 has 64 divisors (see below), whose sum is σ = 139514880. Its totient is φ = 15163200.

The previous prime is 57001933. The next prime is 57001939. The reversal of 57001938 is 83910075.

It is a junction number, because it is equal to n+sod(n) for n = 57001899 and 57001908.

It is not an unprimeable number, because it can be changed into a prime (57001933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48093 + ... + 49263.

It is an arithmetic number, because the mean of its divisors is an integer number (2179920).

Almost surely, 2^57001938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57001938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69757440).

57001938 is an abundant number, since it is smaller than the sum of its proper divisors (82512942).

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

57001938 is a wasteful number, since it uses less digits than its factorization.

57001938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 57001938 is about 7549.9627813652. The cubic root of 57001938 is about 384.8544747129.

The spelling of 57001938 in words is "fifty-seven million, one thousand, nine hundred thirty-eight".