49087521 has 24 divisors (see below), whose sum is σ = 81282240. Its totient is φ = 27963936.

The previous prime is 49087513. The next prime is 49087523. The reversal of 49087521 is 12578094.

It is not a de Polignac number, because 49087521 - 2³ = 49087513 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49087523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23506 + ... + 25508.

It is an arithmetic number, because the mean of its divisors is an integer number (3386760).

Almost surely, 2^49087521 is an apocalyptic number.

It is an amenable number.

49087521 is a deficient number, since it is larger than the sum of its proper divisors (32194719).

49087521 is a wasteful number, since it uses less digits than its factorization.

49087521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2405 (or 2402 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 49087521 is about 7006.2487109722. The cubic root of 49087521 is about 366.1483095082.

The spelling of 49087521 in words is "forty-nine million, eighty-seven thousand, five hundred twenty-one".