55455510 has 48 divisors (see below), whose sum is σ = 146302128. Its totient is φ = 13442880.

The previous prime is 55455487. The next prime is 55455539. The reversal of 55455510 is 1555455.

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 23 ways as a sum of consecutive naturals, for example, 4009 + ... + 11268.

It is an arithmetic number, because the mean of its divisors is an integer number (3047961).

Almost surely, 2^55455510 is an apocalyptic number.

55455510 is an abundant number, since it is smaller than the sum of its proper divisors (90846618).

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

55455510 is a wasteful number, since it uses less digits than its factorization.

55455510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15309 (or 15298 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 55455510 is about 7446.8456409409. The cubic root of 55455510 is about 381.3422294111.

The spelling of 55455510 in words is "fifty-five million, four hundred fifty-five thousand, five hundred ten".