57399730 has 8 divisors (see below), whose sum is σ = 103319532. Its totient is φ = 22959888.

The previous prime is 57399721. The next prime is 57399739. The reversal of 57399730 is 3799375.

It is an interprime number because it is at equal distance from previous prime (57399721) and next prime (57399739).

It can be written as a sum of positive squares in 2 ways, for example, as 54804409 + 2595321 = 7403^2 + 1611^2 .

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 (57399739) 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, 2869977 + ... + 2869996.

Almost surely, 2^57399730 is an apocalyptic number.

57399730 is a deficient number, since it is larger than the sum of its proper divisors (45919802).

57399730 is a wasteful number, since it uses less digits than its factorization.

57399730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5739980.

The product of its (nonzero) digits is 178605, while the sum is 43.

The square root of 57399730 is about 7576.2609511553. The cubic root of 57399730 is about 385.7476448384.

The spelling of 57399730 in words is "fifty-seven million, three hundred ninety-nine thousand, seven hundred thirty".