48161521 has 2 divisors, whose sum is σ = 48161522. Its totient is φ = 48161520.

The previous prime is 48161483. The next prime is 48161551. The reversal of 48161521 is 12516184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30647296 + 17514225 = 5536^2 + 4185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48161521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 48161521.

It is not a weakly prime, because it can be changed into another prime (48161551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24080760 + 24080761.

It is an arithmetic number, because the mean of its divisors is an integer number (24080761).

Almost surely, 2^48161521 is an apocalyptic number.

It is an amenable number.

48161521 is a deficient number, since it is larger than the sum of its proper divisors (1).

48161521 is an equidigital number, since it uses as much as digits as its factorization.

48161521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 28.

The square root of 48161521 is about 6939.8502145219. The cubic root of 48161521 is about 363.8313054201.

It can be divided in two parts, 481615 and 21, that added together give a square (481636 = 694²).

The spelling of 48161521 in words is "forty-eight million, one hundred sixty-one thousand, five hundred twenty-one".