55433216 has 24 divisors (see below), whose sum is σ = 110843460. Its totient is φ = 27715584.

The previous prime is 55433171. The next prime is 55433221. The reversal of 55433216 is 61233455.

It is a super-2 number, since 2×55433216² = 6145682872205312, 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 as a sum of consecutive naturals, namely, 11486 + ... + 15581.

Almost surely, 2^55433216 is an apocalyptic number.

It is an amenable number.

55433216 is a deficient number, since it is larger than the sum of its proper divisors (55410244).

55433216 is an equidigital number, since it uses as much as digits as its factorization.

55433216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27089 (or 27069 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 55433216 is about 7445.3486150751. The cubic root of 55433216 is about 381.2911206744.

The spelling of 55433216 in words is "fifty-five million, four hundred thirty-three thousand, two hundred sixteen".