49523521 has 4 divisors (see below), whose sum is σ = 50335444. Its totient is φ = 48711600.

The previous prime is 49523497. The next prime is 49523543. The reversal of 49523521 is 12532594.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1290496 + 48233025 = 1136^2 + 6945^2 .

It is a cyclic number.

It is not a de Polignac number, because 49523521 - 2⁵ = 49523489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49523581) 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, 405870 + ... + 405991.

It is an arithmetic number, because the mean of its divisors is an integer number (12583861).

Almost surely, 2^49523521 is an apocalyptic number.

It is an amenable number.

49523521 is a deficient number, since it is larger than the sum of its proper divisors (811923).

49523521 is an equidigital number, since it uses as much as digits as its factorization.

49523521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811922.

The product of its digits is 10800, while the sum is 31.

The square root of 49523521 is about 7037.2950058954. The cubic root of 49523521 is about 367.2291703220.

The spelling of 49523521 in words is "forty-nine million, five hundred twenty-three thousand, five hundred twenty-one".