49515018 has 32 divisors (see below), whose sum is σ = 114189696. Its totient is φ = 14020608.

The previous prime is 49514989. The next prime is 49515023. The reversal of 49515018 is 81051594.

It is a self number, because there is not a number n which added to its sum of digits gives 49515018.

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, 471 + ... + 9962.

It is an arithmetic number, because the mean of its divisors is an integer number (3568428).

Almost surely, 2^49515018 is an apocalyptic number.

49515018 is an abundant number, since it is smaller than the sum of its proper divisors (64674678).

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

49515018 is a wasteful number, since it uses less digits than its factorization.

49515018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10558.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 49515018 is about 7036.6908415817. The cubic root of 49515018 is about 367.2081518356.

The spelling of 49515018 in words is "forty-nine million, five hundred fifteen thousand, eighteen".