49878522 has 24 divisors (see below), whose sum is σ = 108200820. Its totient is φ = 16606080.

The previous prime is 49878503. The next prime is 49878523. The reversal of 49878522 is 22587894.

49878522 is a `hidden beast` number, since 49 + 87 + 8 + 522 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 37197801 + 12680721 = 6099^2 + 3561^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49878523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25872 + ... + 27732.

Almost surely, 2^49878522 is an apocalyptic number.

49878522 is the 4467-th heptagonal number.

49878522 is an abundant number, since it is smaller than the sum of its proper divisors (58322298).

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

49878522 is a wasteful number, since it uses less digits than its factorization.

49878522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358 (or 3355 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 49878522 is about 7062.4727964078. The cubic root of 49878522 is about 368.1045553967.

The spelling of 49878522 in words is "forty-nine million, eight hundred seventy-eight thousand, five hundred twenty-two".