57401237 has 4 divisors (see below), whose sum is σ = 59380620. Its totient is φ = 55421856.

The previous prime is 57401233. The next prime is 57401257. The reversal of 57401237 is 73210475.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14485636 + 42915601 = 3806^2 + 6551^2 .

It is a cyclic number.

It is not a de Polignac number, because 57401237 - 2² = 57401233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1979353 = 57401237 / (5 + 7 + 4 + 0 + 1 + 2 + 3 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57401233) 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, 989648 + ... + 989705.

It is an arithmetic number, because the mean of its divisors is an integer number (14845155).

Almost surely, 2^57401237 is an apocalyptic number.

It is an amenable number.

57401237 is a deficient number, since it is larger than the sum of its proper divisors (1979383).

57401237 is a wasteful number, since it uses less digits than its factorization.

57401237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979382.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 57401237 is about 7576.3604058941. The cubic root of 57401237 is about 385.7510206766.

The spelling of 57401237 in words is "fifty-seven million, four hundred one thousand, two hundred thirty-seven".