49255518 has 32 divisors (see below), whose sum is σ = 106444800. Its totient is φ = 15104736.

The previous prime is 49255517. The next prime is 49255529. The reversal of 49255518 is 81555294.

It is a super-2 number, since 2×49255518² = 4852212106896648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49255513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27123 + ... + 28881.

It is an arithmetic number, because the mean of its divisors is an integer number (3326400).

Almost surely, 2^49255518 is an apocalyptic number.

49255518 is an abundant number, since it is smaller than the sum of its proper divisors (57189282).

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

49255518 is a wasteful number, since it uses less digits than its factorization.

49255518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136.

The product of its digits is 72000, while the sum is 39.

The square root of 49255518 is about 7018.2275540196. The cubic root of 49255518 is about 366.5655355621.

The spelling of 49255518 in words is "forty-nine million, two hundred fifty-five thousand, five hundred eighteen".