55540500 has 96 divisors (see below), whose sum is σ = 164656128. Its totient is φ = 14544000.

The previous prime is 55540487. The next prime is 55540519. The reversal of 55540500 is 504555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91197 + ... + 91803.

It is an arithmetic number, because the mean of its divisors is an integer number (1715168).

Almost surely, 2^55540500 is an apocalyptic number.

55540500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55540500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82328064).

55540500 is an abundant number, since it is smaller than the sum of its proper divisors (109115628).

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

55540500 is a wasteful number, since it uses less digits than its factorization.

55540500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 55540500 is about 7452.5498991956. The cubic root of 55540500 is about 381.5369424526.

The spelling of 55540500 in words is "fifty-five million, five hundred forty thousand, five hundred".