53213617 has 2 divisors, whose sum is σ = 53213618. Its totient is φ = 53213616.

The previous prime is 53213599. The next prime is 53213627. The reversal of 53213617 is 71631235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45684081 + 7529536 = 6759^2 + 2744^2 .

It is a cyclic number.

It is not a de Polignac number, because 53213617 - 2¹⁵ = 53180849 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53213627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26606808 + 26606809.

It is an arithmetic number, because the mean of its divisors is an integer number (26606809).

Almost surely, 2^53213617 is an apocalyptic number.

It is an amenable number.

53213617 is a deficient number, since it is larger than the sum of its proper divisors (1).

53213617 is an equidigital number, since it uses as much as digits as its factorization.

53213617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 28.

The square root of 53213617 is about 7294.7664116132. The cubic root of 53213617 is about 376.1325570987.

The spelling of 53213617 in words is "fifty-three million, two hundred thirteen thousand, six hundred seventeen".