53579921 has 2 divisors, whose sum is σ = 53579922. Its totient is φ = 53579920.

The previous prime is 53579909. The next prime is 53579927. The reversal of 53579921 is 12997535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27457600 + 26122321 = 5240^2 + 5111^2 .

It is a cyclic number.

It is not a de Polignac number, because 53579921 - 2¹⁰ = 53578897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53579927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26789960 + 26789961.

It is an arithmetic number, because the mean of its divisors is an integer number (26789961).

Almost surely, 2^53579921 is an apocalyptic number.

It is an amenable number.

53579921 is a deficient number, since it is larger than the sum of its proper divisors (1).

53579921 is an equidigital number, since it uses as much as digits as its factorization.

53579921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85050, while the sum is 41.

The square root of 53579921 is about 7319.8306674403. The cubic root of 53579921 is about 376.9936394736.

The spelling of 53579921 in words is "fifty-three million, five hundred seventy-nine thousand, nine hundred twenty-one".