54191660 has 12 divisors (see below), whose sum is σ = 113802528. Its totient is φ = 21676656.

The previous prime is 54191659. The next prime is 54191671. The reversal of 54191660 is 6619145.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1354772 + ... + 1354811.

It is an arithmetic number, because the mean of its divisors is an integer number (9483544).

Almost surely, 2^54191660 is an apocalyptic number.

It is an amenable number.

54191660 is an abundant number, since it is smaller than the sum of its proper divisors (59610868).

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

54191660 is a wasteful number, since it uses less digits than its factorization.

54191660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709592 (or 2709590 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 54191660 is about 7361.4984887589. The cubic root of 54191660 is about 378.4229656034.

The spelling of 54191660 in words is "fifty-four million, one hundred ninety-one thousand, six hundred sixty".