48931521 has 4 divisors (see below), whose sum is σ = 65242032. Its totient is φ = 32621012.

The previous prime is 48931481. The next prime is 48931537. The reversal of 48931521 is 12513984.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 48931521 - 2¹¹ = 48929473 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (48931541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8155251 + ... + 8155256.

It is an arithmetic number, because the mean of its divisors is an integer number (16310508).

Almost surely, 2^48931521 is an apocalyptic number.

It is an amenable number.

48931521 is a deficient number, since it is larger than the sum of its proper divisors (16310511).

48931521 is a wasteful number, since it uses less digits than its factorization.

48931521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16310510.

The product of its digits is 8640, while the sum is 33.

The square root of 48931521 is about 6995.1069327066. The cubic root of 48931521 is about 365.7600251383.

The spelling of 48931521 in words is "forty-eight million, nine hundred thirty-one thousand, five hundred twenty-one".