55207308 has 48 divisors (see below), whose sum is σ = 139426560. Its totient is φ = 16901184.

The previous prime is 55207297. The next prime is 55207343. The reversal of 55207308 is 80370255.

It is a happy 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, 34633 + ... + 36191.

It is an arithmetic number, because the mean of its divisors is an integer number (2904720).

Almost surely, 2^55207308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55207308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69713280).

55207308 is an abundant number, since it is smaller than the sum of its proper divisors (84219252).

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

55207308 is a wasteful number, since it uses less digits than its factorization.

55207308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806 (or 1804 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 55207308 is about 7430.1620439934. The cubic root of 55207308 is about 380.7724545637.

The spelling of 55207308 in words is "fifty-five million, two hundred seven thousand, three hundred eight".