402053497 has 2 divisors, whose sum is σ = 402053498. Its totient is φ = 402053496.

The previous prime is 402053479. The next prime is 402053521. The reversal of 402053497 is 794350204.

Together with previous prime (402053479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305935081 + 96118416 = 17491^2 + 9804^2 .

It is a cyclic number.

It is not a de Polignac number, because 402053497 - 2¹¹ = 402051449 is a prime.

It is not a weakly prime, because it can be changed into another prime (402053447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201026748 + 201026749.

It is an arithmetic number, because the mean of its divisors is an integer number (201026749).

Almost surely, 2^402053497 is an apocalyptic number.

It is an amenable number.

402053497 is a deficient number, since it is larger than the sum of its proper divisors (1).

402053497 is an equidigital number, since it uses as much as digits as its factorization.

402053497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 402053497 is about 20051.2717053059. The cubic root of 402053497 is about 738.0650061593.

The spelling of 402053497 in words is "four hundred two million, fifty-three thousand, four hundred ninety-seven".