49847521 has 2 divisors, whose sum is σ = 49847522. Its totient is φ = 49847520.

The previous prime is 49847477. The next prime is 49847537. The reversal of 49847521 is 12574894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49505296 + 342225 = 7036^2 + 585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49847521 is a prime.

It is not a weakly prime, because it can be changed into another prime (49847561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24923760 + 24923761.

It is an arithmetic number, because the mean of its divisors is an integer number (24923761).

Almost surely, 2^49847521 is an apocalyptic number.

It is an amenable number.

49847521 is a deficient number, since it is larger than the sum of its proper divisors (1).

49847521 is an equidigital number, since it uses as much as digits as its factorization.

49847521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 49847521 is about 7060.2776857571. The cubic root of 49847521 is about 368.0282769111.

The spelling of 49847521 in words is "forty-nine million, eight hundred forty-seven thousand, five hundred twenty-one".