55554591 has 32 divisors (see below), whose sum is σ = 80137728. Its totient is φ = 34151040.

The previous prime is 55554563. The next prime is 55554593. The reversal of 55554591 is 19545555.

It is not a de Polignac number, because 55554591 - 2⁵ = 55554559 is a prime.

It is a super-3 number, since 3×55554591³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55554593) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281905 + ... + 282101.

It is an arithmetic number, because the mean of its divisors is an integer number (2504304).

Almost surely, 2^55554591 is an apocalyptic number.

55554591 is a deficient number, since it is larger than the sum of its proper divisors (24583137).

55554591 is a wasteful number, since it uses less digits than its factorization.

55554591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351.

The product of its digits is 112500, while the sum is 39.

The square root of 55554591 is about 7453.4952203647. The cubic root of 55554591 is about 381.5692058907.

The spelling of 55554591 in words is "fifty-five million, five hundred fifty-four thousand, five hundred ninety-one".