53798621 has 2 divisors, whose sum is σ = 53798622. Its totient is φ = 53798620.

The previous prime is 53798603. The next prime is 53798627. The reversal of 53798621 is 12689735.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27931225 + 25867396 = 5285^2 + 5086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53798621 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53798627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26899310 + 26899311.

It is an arithmetic number, because the mean of its divisors is an integer number (26899311).

Almost surely, 2^53798621 is an apocalyptic number.

It is an amenable number.

53798621 is a deficient number, since it is larger than the sum of its proper divisors (1).

53798621 is an equidigital number, since it uses as much as digits as its factorization.

53798621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 53798621 is about 7334.7543244474. The cubic root of 53798621 is about 377.5058747971.

The spelling of 53798621 in words is "fifty-three million, seven hundred ninety-eight thousand, six hundred twenty-one".