401252523 has 24 divisors (see below), whose sum is σ = 623137680. Its totient is φ = 228997440.

The previous prime is 401252519. The next prime is 401252573. The reversal of 401252523 is 325252104.

It is not a de Polignac number, because 401252523 - 2² = 401252519 is a prime.

It is a super-2 number, since 2×401252523² = 322007174427731058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401252493 and 401252502.

It is not an unprimeable number, because it can be changed into a prime (401252573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179553 + ... + 181773.

It is an arithmetic number, because the mean of its divisors is an integer number (25964070).

Almost surely, 2^401252523 is an apocalyptic number.

401252523 is a deficient number, since it is larger than the sum of its proper divisors (221885157).

401252523 is a wasteful number, since it uses less digits than its factorization.

401252523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3467 (or 3460 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 401252523 is about 20031.2886005868. The cubic root of 401252523 is about 737.5745541024.

The spelling of 401252523 in words is "four hundred one million, two hundred fifty-two thousand, five hundred twenty-three".