55447332 has 12 divisors (see below), whose sum is σ = 129377136. Its totient is φ = 18482440.

The previous prime is 55447331. The next prime is 55447361. The reversal of 55447332 is 23374455.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 55447293 and 55447302.

It is not an unprimeable number, because it can be changed into a prime (55447331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2310294 + ... + 2310317.

It is an arithmetic number, because the mean of its divisors is an integer number (10781428).

Almost surely, 2^55447332 is an apocalyptic number.

It is an amenable number.

55447332 is an abundant number, since it is smaller than the sum of its proper divisors (73929804).

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

55447332 is a wasteful number, since it uses less digits than its factorization.

55447332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4620618 (or 4620616 counting only the distinct ones).

The product of its digits is 50400, while the sum is 33.

The square root of 55447332 is about 7446.2965291479. The cubic root of 55447332 is about 381.3234830319.

The spelling of 55447332 in words is "fifty-five million, four hundred forty-seven thousand, three hundred thirty-two".