55145454 has 32 divisors (see below), whose sum is σ = 135744000. Its totient is φ = 14543712.

The previous prime is 55145417. The next prime is 55145473. The reversal of 55145454 is 45454155.

It is a super-2 number, since 2×55145454² = 6082042193732232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49954 + ... + 51045.

It is an arithmetic number, because the mean of its divisors is an integer number (4242000).

Almost surely, 2^55145454 is an apocalyptic number.

55145454 is an abundant number, since it is smaller than the sum of its proper divisors (80598546).

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

55145454 is a wasteful number, since it uses less digits than its factorization.

55145454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101024.

The product of its digits is 40000, while the sum is 33.

The square root of 55145454 is about 7425.9985187179. The cubic root of 55145454 is about 380.6301962184.

The spelling of 55145454 in words is "fifty-five million, one hundred forty-five thousand, four hundred fifty-four".