55445055 has 16 divisors (see below), whose sum is σ = 91110624. Its totient is φ = 28771200.

The previous prime is 55445051. The next prime is 55445063. The reversal of 55445055 is 55054455.

It is not a de Polignac number, because 55445055 - 2² = 55445051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55445051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49396 + ... + 50505.

It is an arithmetic number, because the mean of its divisors is an integer number (5694414).

Almost surely, 2^55445055 is an apocalyptic number.

55445055 is a deficient number, since it is larger than the sum of its proper divisors (35665569).

55445055 is a wasteful number, since it uses less digits than its factorization.

55445055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99946.

The product of its (nonzero) digits is 50000, while the sum is 33.

The square root of 55445055 is about 7446.1436327807. The cubic root of 55445055 is about 381.3182631507.

The spelling of 55445055 in words is "fifty-five million, four hundred forty-five thousand, fifty-five".