55205554 has 16 divisors (see below), whose sum is σ = 85255128. Its totient is φ = 26790912.

The previous prime is 55205551. The next prime is 55205561. The reversal of 55205554 is 45550255.

It can be written as a sum of positive squares in 4 ways, for example, as 36929929 + 18275625 = 6077^2 + 4275^2 .

It is not an unprimeable number, because it can be changed into a prime (55205551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44754 + ... + 45970.

Almost surely, 2^55205554 is an apocalyptic number.

55205554 is a deficient number, since it is larger than the sum of its proper divisors (30049574).

55205554 is a wasteful number, since it uses less digits than its factorization.

55205554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869.

The product of its (nonzero) digits is 25000, while the sum is 31.

The square root of 55205554 is about 7430.0440106368. The cubic root of 55205554 is about 380.7684219939.

The spelling of 55205554 in words is "fifty-five million, two hundred five thousand, five hundred fifty-four".