54815690 has 32 divisors (see below), whose sum is σ = 100650816. Its totient is φ = 21490560.

The previous prime is 54815689. The next prime is 54815699. The reversal of 54815690 is 9651845.

54815690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×54815690² = 6009519740352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54815699) 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 15 ways as a sum of consecutive naturals, for example, 174974 + ... + 175286.

It is an arithmetic number, because the mean of its divisors is an integer number (3145338).

Almost surely, 2^54815690 is an apocalyptic number.

54815690 is a deficient number, since it is larger than the sum of its proper divisors (45835126).

54815690 is a wasteful number, since it uses less digits than its factorization.

54815690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 54815690 is about 7403.7618816383. The cubic root of 54815690 is about 379.8699693608.

The spelling of 54815690 in words is "fifty-four million, eight hundred fifteen thousand, six hundred ninety".