55500552 has 80 divisors (see below), whose sum is σ = 159320700. Its totient is φ = 18040320.

The previous prime is 55500527. The next prime is 55500607. The reversal of 55500552 is 25500555.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 55264356 + 236196 = 7434^2 + 486^2 .

It is a super-2 number, since 2×55500552² = 6160622544609408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25524 + ... + 27612.

Almost surely, 2^55500552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55500552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79660350).

55500552 is an abundant number, since it is smaller than the sum of its proper divisors (103820148).

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

55500552 is a wasteful number, since it uses less digits than its factorization.

55500552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148 (or 2135 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 27.

The square root of 55500552 is about 7449.8692605978. The cubic root of 55500552 is about 381.4454458962.

The spelling of 55500552 in words is "fifty-five million, five hundred thousand, five hundred fifty-two".