49771520 has 44 divisors (see below), whose sum is σ = 119405604. Its totient is φ = 19906560.

The previous prime is 49771489. The next prime is 49771537. The reversal of 49771520 is 2517794.

It can be written as a sum of positive squares in 2 ways, for example, as 7573504 + 42198016 = 2752^2 + 6496^2 .

It is a super-2 number, since 2×49771520² = 4954408406220800, which contains 22 as substring.

It is a congruent number.

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, 260 + ... + 9980.

Almost surely, 2^49771520 is an apocalyptic number.

49771520 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 49771520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59702802).

49771520 is an abundant number, since it is smaller than the sum of its proper divisors (69634084).

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

49771520 is an equidigital number, since it uses as much as digits as its factorization.

49771520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9746 (or 9728 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 49771520 is about 7054.8933372518. The cubic root of 49771520 is about 367.8411412634.

The spelling of 49771520 in words is "forty-nine million, seven hundred seventy-one thousand, five hundred twenty".