57137890 has 8 divisors (see below), whose sum is σ = 102848220. Its totient is φ = 22855152.

The previous prime is 57137849. The next prime is 57137897. The reversal of 57137890 is 9873175.

It can be written as a sum of positive squares in 2 ways, for example, as 55666521 + 1471369 = 7461^2 + 1213^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (57137897) 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, 2856885 + ... + 2856904.

Almost surely, 2^57137890 is an apocalyptic number.

57137890 is a deficient number, since it is larger than the sum of its proper divisors (45710330).

57137890 is a wasteful number, since it uses less digits than its factorization.

57137890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5713796.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 57137890 is about 7558.9609074264. The cubic root of 57137890 is about 385.1601964474.

The spelling of 57137890 in words is "fifty-seven million, one hundred thirty-seven thousand, eight hundred ninety".