57402237 has 4 divisors (see below), whose sum is σ = 76536320. Its totient is φ = 38268156.

The previous prime is 57402229. The next prime is 57402259. The reversal of 57402237 is 73220475.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 57402237 - 2³ = 57402229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57402437) 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, 9567037 + ... + 9567042.

It is an arithmetic number, because the mean of its divisors is an integer number (19134080).

Almost surely, 2^57402237 is an apocalyptic number.

It is an amenable number.

57402237 is a deficient number, since it is larger than the sum of its proper divisors (19134083).

57402237 is a wasteful number, since it uses less digits than its factorization.

57402237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19134082.

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 57402237 is about 7576.4264003552. The cubic root of 57402237 is about 385.7532607490.

The spelling of 57402237 in words is "fifty-seven million, four hundred two thousand, two hundred thirty-seven".