57990487 has 4 divisors (see below), whose sum is σ = 58155120. Its totient is φ = 57825856.

The previous prime is 57990479. The next prime is 57990509. The reversal of 57990487 is 78409975.

It is a happy number.

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 57990487 - 2³ = 57990479 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 57990487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57990437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81787 + ... + 82492.

It is an arithmetic number, because the mean of its divisors is an integer number (14538780).

Almost surely, 2^57990487 is an apocalyptic number.

57990487 is a deficient number, since it is larger than the sum of its proper divisors (164633).

57990487 is a wasteful number, since it uses less digits than its factorization.

57990487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164632.

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 57990487 is about 7615.1485212043. The cubic root of 57990487 is about 387.0664998887.

The spelling of 57990487 in words is "fifty-seven million, nine hundred ninety thousand, four hundred eighty-seven".