52619921 has 2 divisors, whose sum is σ = 52619922. Its totient is φ = 52619920.

The previous prime is 52619909. The next prime is 52619939. The reversal of 52619921 is 12991625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48163600 + 4456321 = 6940^2 + 2111^2 .

It is a cyclic number.

It is not a de Polignac number, because 52619921 - 2²² = 48425617 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52619951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26309960 + 26309961.

It is an arithmetic number, because the mean of its divisors is an integer number (26309961).

Almost surely, 2^52619921 is an apocalyptic number.

It is an amenable number.

52619921 is a deficient number, since it is larger than the sum of its proper divisors (1).

52619921 is an equidigital number, since it uses as much as digits as its factorization.

52619921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 35.

The square root of 52619921 is about 7253.9589880285. The cubic root of 52619921 is about 374.7285051185.

The spelling of 52619921 in words is "fifty-two million, six hundred nineteen thousand, nine hundred twenty-one".