49536521 has 4 divisors (see below), whose sum is σ = 52450452. Its totient is φ = 46622592.

The previous prime is 49536497. The next prime is 49536523. The reversal of 49536521 is 12563594.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12563594 = 2 ⋅6281797.

It can be written as a sum of positive squares in 2 ways, for example, as 46512400 + 3024121 = 6820^2 + 1739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49536521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49536523) 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, 1456940 + ... + 1456973.

It is an arithmetic number, because the mean of its divisors is an integer number (13112613).

Almost surely, 2^49536521 is an apocalyptic number.

It is an amenable number.

49536521 is a deficient number, since it is larger than the sum of its proper divisors (2913931).

49536521 is a wasteful number, since it uses less digits than its factorization.

49536521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913930.

The product of its digits is 32400, while the sum is 35.

The square root of 49536521 is about 7038.2185956391. The cubic root of 49536521 is about 367.2613002504.

The spelling of 49536521 in words is "forty-nine million, five hundred thirty-six thousand, five hundred twenty-one".