57801987 has 6 divisors (see below), whose sum is σ = 83491772. Its totient is φ = 38534652.

The previous prime is 57801983. The next prime is 57802007. The reversal of 57801987 is 78910875.

It is not a de Polignac number, because 57801987 - 2² = 57801983 is a prime.

It is a super-2 number, since 2×57801987² = 6682139402296338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57801983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3211213 + ... + 3211230.

Almost surely, 2^57801987 is an apocalyptic number.

57801987 is a deficient number, since it is larger than the sum of its proper divisors (25689785).

57801987 is a wasteful number, since it uses less digits than its factorization.

57801987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6422449 (or 6422446 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 45.

The square root of 57801987 is about 7602.7618008195. The cubic root of 57801987 is about 386.6466538228.

The spelling of 57801987 in words is "fifty-seven million, eight hundred one thousand, nine hundred eighty-seven".