49855518 has 12 divisors (see below), whose sum is σ = 108020328. Its totient is φ = 16618500.

The previous prime is 49855517. The next prime is 49855523. The reversal of 49855518 is 81555894.

It is a happy number.

49855518 is a `hidden beast` number, since 4 + 98 + 5 + 551 + 8 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49855517) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1384858 + ... + 1384893.

It is an arithmetic number, because the mean of its divisors is an integer number (9001694).

Almost surely, 2^49855518 is an apocalyptic number.

49855518 is an abundant number, since it is smaller than the sum of its proper divisors (58164810).

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

49855518 is a wasteful number, since it uses less digits than its factorization.

49855518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2769759 (or 2769756 counting only the distinct ones).

The product of its digits is 288000, while the sum is 45.

The square root of 49855518 is about 7060.8440005427. The cubic root of 49855518 is about 368.0479566912.

The spelling of 49855518 in words is "forty-nine million, eight hundred fifty-five thousand, five hundred eighteen".