48917521 has 2 divisors, whose sum is σ = 48917522. Its totient is φ = 48917520.

The previous prime is 48917513. The next prime is 48917537. The reversal of 48917521 is 12571984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40132225 + 8785296 = 6335^2 + 2964^2 .

It is a cyclic number.

It is not a de Polignac number, because 48917521 - 2³ = 48917513 is a prime.

It is not a weakly prime, because it can be changed into another prime (48917581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24458760 + 24458761.

It is an arithmetic number, because the mean of its divisors is an integer number (24458761).

Almost surely, 2^48917521 is an apocalyptic number.

It is an amenable number.

48917521 is a deficient number, since it is larger than the sum of its proper divisors (1).

48917521 is an equidigital number, since it uses as much as digits as its factorization.

48917521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 37.

The square root of 48917521 is about 6994.1061616192. The cubic root of 48917521 is about 365.7251387727.

The spelling of 48917521 in words is "forty-eight million, nine hundred seventeen thousand, five hundred twenty-one".