49131520 has 52 divisors (see below), whose sum is σ = 117950400. Its totient is φ = 19644416.

The previous prime is 49131517. The next prime is 49131557. The reversal of 49131520 is 2513194.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19281 + ... + 21679.

Almost surely, 2^49131520 is an apocalyptic number.

49131520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49131520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58975200).

49131520 is an abundant number, since it is smaller than the sum of its proper divisors (68818880).

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

49131520 is an equidigital number, since it uses as much as digits as its factorization.

49131520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428 (or 2406 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 49131520 is about 7009.3879904026. The cubic root of 49131520 is about 366.2576743607.

The spelling of 49131520 in words is "forty-nine million, one hundred thirty-one thousand, five hundred twenty".