52526921 has 2 divisors, whose sum is σ = 52526922. Its totient is φ = 52526920.

The previous prime is 52526911. The next prime is 52526941. The reversal of 52526921 is 12962525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42055225 + 10471696 = 6485^2 + 3236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52526921 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (52526911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26263460 + 26263461.

It is an arithmetic number, because the mean of its divisors is an integer number (26263461).

Almost surely, 2^52526921 is an apocalyptic number.

It is an amenable number.

52526921 is a deficient number, since it is larger than the sum of its proper divisors (1).

52526921 is an equidigital number, since it uses as much as digits as its factorization.

52526921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 32.

The square root of 52526921 is about 7247.5458604965. The cubic root of 52526921 is about 374.5076109429.

The spelling of 52526921 in words is "fifty-two million, five hundred twenty-six thousand, nine hundred twenty-one".