55672500 has 120 divisors (see below), whose sum is σ = 175118944. Its totient is φ = 13680000.

The previous prime is 55672483. The next prime is 55672537. The reversal of 55672500 is 527655.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 97215 + ... + 97785.

Almost surely, 2^55672500 is an apocalyptic number.

55672500 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 55672500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87559472).

55672500 is an abundant number, since it is smaller than the sum of its proper divisors (119446444).

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

55672500 is a wasteful number, since it uses less digits than its factorization.

55672500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 55672500 is about 7461.4006727960. The cubic root of 55672500 is about 381.8389624847.

The spelling of 55672500 in words is "fifty-five million, six hundred seventy-two thousand, five hundred".