54531690 has 32 divisors (see below), whose sum is σ = 131193216. Its totient is φ = 14506560.

The previous prime is 54531683. The next prime is 54531707. The reversal of 54531690 is 9613545.

It is a happy number.

It is a super-2 number, since 2×54531690² = 5947410428512200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11859 + ... + 15801.

It is an arithmetic number, because the mean of its divisors is an integer number (4099788).

Almost surely, 2^54531690 is an apocalyptic number.

54531690 is an abundant number, since it is smaller than the sum of its proper divisors (76661526).

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

54531690 is a wasteful number, since it uses less digits than its factorization.

54531690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4414.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 54531690 is about 7384.5575358311. The cubic root of 54531690 is about 379.2127978865.

The spelling of 54531690 in words is "fifty-four million, five hundred thirty-one thousand, six hundred ninety".