53974621 has 2 divisors, whose sum is σ = 53974622. Its totient is φ = 53974620.

The previous prime is 53974579. The next prime is 53974631. The reversal of 53974621 is 12647935.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44702596 + 9272025 = 6686^2 + 3045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53974621 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 (53974631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26987310 + 26987311.

It is an arithmetic number, because the mean of its divisors is an integer number (26987311).

Almost surely, 2^53974621 is an apocalyptic number.

It is an amenable number.

53974621 is a deficient number, since it is larger than the sum of its proper divisors (1).

53974621 is an equidigital number, since it uses as much as digits as its factorization.

53974621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 53974621 is about 7346.7422031809. The cubic root of 53974621 is about 377.9170917334.

The spelling of 53974621 in words is "fifty-three million, nine hundred seventy-four thousand, six hundred twenty-one".