48919561 has 2 divisors, whose sum is σ = 48919562. Its totient is φ = 48919560.

The previous prime is 48919487. The next prime is 48919567. The reversal of 48919561 is 16591984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29909961 + 19009600 = 5469^2 + 4360^2 .

It is a cyclic number.

It is not a de Polignac number, because 48919561 - 2¹¹ = 48917513 is a prime.

It is not a weakly prime, because it can be changed into another prime (48919567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24459780 + 24459781.

It is an arithmetic number, because the mean of its divisors is an integer number (24459781).

Almost surely, 2^48919561 is an apocalyptic number.

It is an amenable number.

48919561 is a deficient number, since it is larger than the sum of its proper divisors (1).

48919561 is an equidigital number, since it uses as much as digits as its factorization.

48919561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 43.

The square root of 48919561 is about 6994.2519971760. The cubic root of 48919561 is about 365.7302226288.

The spelling of 48919561 in words is "forty-eight million, nine hundred nineteen thousand, five hundred sixty-one".