55312308 has 60 divisors (see below), whose sum is σ = 149288832. Its totient is φ = 17839440.

The previous prime is 55312307. The next prime is 55312331. The reversal of 55312308 is 80321355.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55312307) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7291 + ... + 12797.

Almost surely, 2^55312308 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 55312308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74644416).

55312308 is an abundant number, since it is smaller than the sum of its proper divisors (93976524).

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

55312308 is a wasteful number, since it uses less digits than its factorization.

55312308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5554 (or 5543 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 55312308 is about 7437.2244822918. The cubic root of 55312308 is about 381.0137015347.

The spelling of 55312308 in words is "fifty-five million, three hundred twelve thousand, three hundred eight".