57988909 has 4 divisors (see below), whose sum is σ = 63260640. Its totient is φ = 52717180.

The previous prime is 57988907. The next prime is 57988939. The reversal of 57988909 is 90988975.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57988909 - 2¹ = 57988907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57988909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57988901) 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, 2635849 + ... + 2635870.

It is an arithmetic number, because the mean of its divisors is an integer number (15815160).

Almost surely, 2^57988909 is an apocalyptic number.

It is an amenable number.

57988909 is a deficient number, since it is larger than the sum of its proper divisors (5271731).

57988909 is a wasteful number, since it uses less digits than its factorization.

57988909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5271730.

The product of its (nonzero) digits is 1632960, while the sum is 55.

The square root of 57988909 is about 7615.0449112267. The cubic root of 57988909 is about 387.0629889883.

The spelling of 57988909 in words is "fifty-seven million, nine hundred eighty-eight thousand, nine hundred nine".