53426621 has 2 divisors, whose sum is σ = 53426622. Its totient is φ = 53426620.

The previous prime is 53426617. The next prime is 53426623. The reversal of 53426621 is 12662435.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46430596 + 6996025 = 6814^2 + 2645^2 .

It is a cyclic number.

It is not a de Polignac number, because 53426621 - 2² = 53426617 is a prime.

Together with 53426623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53426623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26713310 + 26713311.

It is an arithmetic number, because the mean of its divisors is an integer number (26713311).

Almost surely, 2^53426621 is an apocalyptic number.

It is an amenable number.

53426621 is a deficient number, since it is larger than the sum of its proper divisors (1).

53426621 is an equidigital number, since it uses as much as digits as its factorization.

53426621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

The square root of 53426621 is about 7309.3516128313. The cubic root of 53426621 is about 376.6337513549.

The spelling of 53426621 in words is "fifty-three million, four hundred twenty-six thousand, six hundred twenty-one".