401297513 has 4 divisors (see below), whose sum is σ = 401556480. Its totient is φ = 401038548.

The previous prime is 401297509. The next prime is 401297549. The reversal of 401297513 is 315792104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 401297513 - 2² = 401297509 is a prime.

It is a super-2 number, since 2×401297513² = 322079387879970338, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401297513.

It is not an unprimeable number, because it can be changed into a prime (401297593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127145 + ... + 130262.

It is an arithmetic number, because the mean of its divisors is an integer number (100389120).

Almost surely, 2^401297513 is an apocalyptic number.

It is an amenable number.

401297513 is a deficient number, since it is larger than the sum of its proper divisors (258967).

401297513 is a wasteful number, since it uses less digits than its factorization.

401297513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258966.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 401297513 is about 20032.4115622658. The cubic root of 401297513 is about 737.6021196521.

The spelling of 401297513 in words is "four hundred one million, two hundred ninety-seven thousand, five hundred thirteen".