57681650 has 24 divisors (see below), whose sum is σ = 115542084. Its totient is φ = 21297600.

The previous prime is 57681647. The next prime is 57681653. The reversal of 57681650 is 5618675.

It is a happy number.

57681650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (57681647) and next prime (57681653).

It can be written as a sum of positive squares in 6 ways, for example, as 4959529 + 52722121 = 2227^2 + 7261^2 .

It is not an unprimeable number, because it can be changed into a prime (57681653) 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 11 ways as a sum of consecutive naturals, for example, 43721 + ... + 45020.

Almost surely, 2^57681650 is an apocalyptic number.

57681650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

57681650 is an abundant number, since it is smaller than the sum of its proper divisors (57860434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57681650 is a wasteful number, since it uses less digits than its factorization.

57681650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88766 (or 88761 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 57681650 is about 7594.8436455269. The cubic root of 57681650 is about 386.3781496488.

The spelling of 57681650 in words is "fifty-seven million, six hundred eighty-one thousand, six hundred fifty".