724215253 has 2 divisors, whose sum is σ = 724215254. Its totient is φ = 724215252.

The previous prime is 724215187. The next prime is 724215259. The reversal of 724215253 is 352512427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 710062609 + 14152644 = 26647^2 + 3762^2 .

It is a cyclic number.

It is not a de Polignac number, because 724215253 - 2⁹ = 724214741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (724215259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362107626 + 362107627.

It is an arithmetic number, because the mean of its divisors is an integer number (362107627).

Almost surely, 2^724215253 is an apocalyptic number.

It is an amenable number.

724215253 is a deficient number, since it is larger than the sum of its proper divisors (1).

724215253 is an equidigital number, since it uses as much as digits as its factorization.

724215253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 31.

The square root of 724215253 is about 26911.2477042593. The cubic root of 724215253 is about 898.0266446626.

The spelling of 724215253 in words is "seven hundred twenty-four million, two hundred fifteen thousand, two hundred fifty-three".