254722813 has 2 divisors, whose sum is σ = 254722814. Its totient is φ = 254722812.

The previous prime is 254722807. The next prime is 254722879. The reversal of 254722813 is 318227452.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147331044 + 107391769 = 12138^2 + 10363^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254722813 is a prime.

It is a super-2 number, since 2×254722813² = 129767422925265938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254722913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127361406 + 127361407.

It is an arithmetic number, because the mean of its divisors is an integer number (127361407).

Almost surely, 2^254722813 is an apocalyptic number.

It is an amenable number.

254722813 is a deficient number, since it is larger than the sum of its proper divisors (1).

254722813 is an equidigital number, since it uses as much as digits as its factorization.

254722813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 34.

The square root of 254722813 is about 15960.0380012079. The cubic root of 254722813 is about 633.9027182087.

The spelling of 254722813 in words is "two hundred fifty-four million, seven hundred twenty-two thousand, eight hundred thirteen".