57988691 has 4 divisors (see below), whose sum is σ = 58551792. Its totient is φ = 57425592.

The previous prime is 57988663. The next prime is 57988747. The reversal of 57988691 is 19688975.

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

It is a cyclic number.

It is not a de Polignac number, because 57988691 - 2¹⁴ = 57972307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57988891) 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, 281396 + ... + 281601.

It is an arithmetic number, because the mean of its divisors is an integer number (14637948).

Almost surely, 2^57988691 is an apocalyptic number.

57988691 is a deficient number, since it is larger than the sum of its proper divisors (563101).

57988691 is a wasteful number, since it uses less digits than its factorization.

57988691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563100.

The product of its digits is 1088640, while the sum is 53.

The square root of 57988691 is about 7615.0305974435. The cubic root of 57988691 is about 387.0625039539.

The spelling of 57988691 in words is "fifty-seven million, nine hundred eighty-eight thousand, six hundred ninety-one".