49218564 has 24 divisors (see below), whose sum is σ = 115153920. Its totient is φ = 16361824.

The previous prime is 49218563. The next prime is 49218581. The reversal of 49218564 is 46581294.

It is not an unprimeable number, because it can be changed into a prime (49218563) 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, 759 + ... + 9950.

It is an arithmetic number, because the mean of its divisors is an integer number (4798080).

Almost surely, 2^49218564 is an apocalyptic number.

It is an amenable number.

49218564 is an abundant number, since it is smaller than the sum of its proper divisors (65935356).

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

49218564 is a wasteful number, since it uses less digits than its factorization.

49218564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11099 (or 11097 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 49218564 is about 7015.5943440310. The cubic root of 49218564 is about 366.4738405777.

The spelling of 49218564 in words is "forty-nine million, two hundred eighteen thousand, five hundred sixty-four".