712440251 has 2 divisors, whose sum is σ = 712440252. Its totient is φ = 712440250.

The previous prime is 712440229. The next prime is 712440293. The reversal of 712440251 is 152044217.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 712440251 - 2¹⁰ = 712439227 is a prime.

It is a super-2 number, since 2×712440251² = 1015142222489886002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 712440251.

It is not a weakly prime, because it can be changed into another prime (712460251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356220125 + 356220126.

It is an arithmetic number, because the mean of its divisors is an integer number (356220126).

Almost surely, 2^712440251 is an apocalyptic number.

712440251 is a deficient number, since it is larger than the sum of its proper divisors (1).

712440251 is an equidigital number, since it uses as much as digits as its factorization.

712440251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 712440251 is about 26691.5764053006. The cubic root of 712440251 is about 893.1330269353.

Adding to 712440251 its reverse (152044217), we get a palindrome (864484468).

The spelling of 712440251 in words is "seven hundred twelve million, four hundred forty thousand, two hundred fifty-one".