55315902 has 16 divisors (see below), whose sum is σ = 110883600. Its totient is φ = 18396672.

The previous prime is 55315891. The next prime is 55315907. The reversal of 55315902 is 20951355.

It is a self number, because there is not a number n which added to its sum of digits gives 55315902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55315907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7573 + ... + 12960.

It is an arithmetic number, because the mean of its divisors is an integer number (6930225).

Almost surely, 2^55315902 is an apocalyptic number.

55315902 is an abundant number, since it is smaller than the sum of its proper divisors (55567698).

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

55315902 is a wasteful number, since it uses less digits than its factorization.

55315902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20987.

The product of its (nonzero) digits is 6750, while the sum is 30.

The square root of 55315902 is about 7437.4661007631. The cubic root of 55315902 is about 381.0219536678.

The spelling of 55315902 in words is "fifty-five million, three hundred fifteen thousand, nine hundred two".