57961990 has 16 divisors (see below), whose sum is σ = 104917680. Its totient is φ = 23054560.

The previous prime is 57961963. The next prime is 57961997. The reversal of 57961990 is 9916975.

57961990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 57961990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57961997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14401 + ... + 17980.

It is an arithmetic number, because the mean of its divisors is an integer number (6557355).

Almost surely, 2^57961990 is an apocalyptic number.

57961990 is a deficient number, since it is larger than the sum of its proper divisors (46955690).

57961990 is a wasteful number, since it uses less digits than its factorization.

57961990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32567.

The product of its (nonzero) digits is 153090, while the sum is 46.

The square root of 57961990 is about 7613.2772181236. The cubic root of 57961990 is about 387.0030869515.

The spelling of 57961990 in words is "fifty-seven million, nine hundred sixty-one thousand, nine hundred ninety".