57990747 has 4 divisors (see below), whose sum is σ = 77321000. Its totient is φ = 38660496.

The previous prime is 57990743. The next prime is 57990761. The reversal of 57990747 is 74709975.

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

It is not a de Polignac number, because 57990747 - 2² = 57990743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57990696 and 57990705.

It is not an unprimeable number, because it can be changed into a prime (57990743) 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, 9665122 + ... + 9665127.

It is an arithmetic number, because the mean of its divisors is an integer number (19330250).

Almost surely, 2^57990747 is an apocalyptic number.

57990747 is a deficient number, since it is larger than the sum of its proper divisors (19330253).

57990747 is a wasteful number, since it uses less digits than its factorization.

57990747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19330252.

The product of its (nonzero) digits is 555660, while the sum is 48.

The square root of 57990747 is about 7615.1655924215. The cubic root of 57990747 is about 387.0670783579.

The spelling of 57990747 in words is "fifty-seven million, nine hundred ninety thousand, seven hundred forty-seven".