401523513 has 8 divisors (see below), whose sum is σ = 537257568. Its totient is φ = 266735904.

The previous prime is 401523509. The next prime is 401523553. The reversal of 401523513 is 315325104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 401523513 - 2² = 401523509 is a prime.

It is a super-2 number, since 2×401523513² = 322442262983722338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401523503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235620 + ... + 237317.

It is an arithmetic number, because the mean of its divisors is an integer number (67157196).

Almost surely, 2^401523513 is an apocalyptic number.

It is an amenable number.

401523513 is a deficient number, since it is larger than the sum of its proper divisors (135734055).

401523513 is a wasteful number, since it uses less digits than its factorization.

401523513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473223.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 401523513 is about 20038.0516268424. The cubic root of 401523513 is about 737.7405595793.

Adding to 401523513 its reverse (315325104), we get a palindrome (716848617).

The spelling of 401523513 in words is "four hundred one million, five hundred twenty-three thousand, five hundred thirteen".