401255297 has 2 divisors, whose sum is σ = 401255298. Its totient is φ = 401255296.

The previous prime is 401255287. The next prime is 401255303. The reversal of 401255297 is 792552104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222337921 + 178917376 = 14911^2 + 13376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401255297 is a prime.

It is a super-2 number, since 2×401255297² = 322011626741116418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401255237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200627648 + 200627649.

It is an arithmetic number, because the mean of its divisors is an integer number (200627649).

Almost surely, 2^401255297 is an apocalyptic number.

It is an amenable number.

401255297 is a deficient number, since it is larger than the sum of its proper divisors (1).

401255297 is an equidigital number, since it uses as much as digits as its factorization.

401255297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 401255297 is about 20031.3578421434. The cubic root of 401255297 is about 737.5762538027.

The spelling of 401255297 in words is "four hundred one million, two hundred fifty-five thousand, two hundred ninety-seven".