722151257 has 2 divisors, whose sum is σ = 722151258. Its totient is φ = 722151256.

The previous prime is 722151233. The next prime is 722151277. The reversal of 722151257 is 752151227.

722151257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 720976201 + 1175056 = 26851^2 + 1084^2 .

It is a cyclic number.

It is not a de Polignac number, because 722151257 - 2¹⁴ = 722134873 is a prime.

It is not a weakly prime, because it can be changed into another prime (722151277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361075628 + 361075629.

It is an arithmetic number, because the mean of its divisors is an integer number (361075629).

Almost surely, 2^722151257 is an apocalyptic number.

It is an amenable number.

722151257 is a deficient number, since it is larger than the sum of its proper divisors (1).

722151257 is an equidigital number, since it uses as much as digits as its factorization.

722151257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9800, while the sum is 32.

The square root of 722151257 is about 26872.8721390178. The cubic root of 722151257 is about 897.1727148305.

The spelling of 722151257 in words is "seven hundred twenty-two million, one hundred fifty-one thousand, two hundred fifty-seven".