55454556 has 24 divisors (see below), whose sum is σ = 130192384. Its totient is φ = 18370800.

The previous prime is 55454543. The next prime is 55454557. The reversal of 55454556 is 65545455.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55454557) 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, 12220 + ... + 16131.

Almost surely, 2^55454556 is an apocalyptic number.

It is an amenable number.

55454556 is an abundant number, since it is smaller than the sum of its proper divisors (74737828).

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

55454556 is a wasteful number, since it uses less digits than its factorization.

55454556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28521 (or 28519 counting only the distinct ones).

The product of its digits is 300000, while the sum is 39.

The square root of 55454556 is about 7446.7815866990. The cubic root of 55454556 is about 381.3400426577.

It can be divided in two parts, 5545 and 4556, that added together give a palindrome (10101).

The spelling of 55454556 in words is "fifty-five million, four hundred fifty-four thousand, five hundred fifty-six".