55213292 has 12 divisors (see below), whose sum is σ = 97984656. Its totient is φ = 27217680.

The previous prime is 55213267. The next prime is 55213313. The reversal of 55213292 is 29231255.

It is a super-2 number, since 2×55213292² = 6097015226954528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96923 + ... + 97490.

It is an arithmetic number, because the mean of its divisors is an integer number (8165388).

Almost surely, 2^55213292 is an apocalyptic number.

It is an amenable number.

55213292 is a deficient number, since it is larger than the sum of its proper divisors (42771364).

55213292 is a wasteful number, since it uses less digits than its factorization.

55213292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194488 (or 194486 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The square root of 55213292 is about 7430.5647160899. The cubic root of 55213292 is about 380.7862115591.

The spelling of 55213292 in words is "fifty-five million, two hundred thirteen thousand, two hundred ninety-two".