54561900 has 36 divisors (see below), whose sum is σ = 157866632. Its totient is φ = 14549760.

The previous prime is 54561889. The next prime is 54561931. The reversal of 54561900 is 916545.

It is a super-2 number, since 2×54561900² = 5954001863220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90637 + ... + 91236.

Almost surely, 2^54561900 is an apocalyptic number.

54561900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

54561900 is an abundant number, since it is smaller than the sum of its proper divisors (103304732).

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

54561900 is a wasteful number, since it uses less digits than its factorization.

54561900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181890 (or 181883 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 54561900 is about 7386.6027373888. The cubic root of 54561900 is about 379.2828116331.

The spelling of 54561900 in words is "fifty-four million, five hundred sixty-one thousand, nine hundred".