402575 has 6 divisors (see below), whose sum is σ = 499224. Its totient is φ = 322040.

The previous prime is 402559. The next prime is 402581. The reversal of 402575 is 575204.

It is not a de Polignac number, because 402575 - 2⁴ = 402559 is a prime.

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 402575.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 402575.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8027 + ... + 8076.

It is an arithmetic number, because the mean of its divisors is an integer number (83204).

2⁴⁰²⁵⁷⁵ is an apocalyptic number.

402575 is a deficient number, since it is larger than the sum of its proper divisors (96649).

402575 is a wasteful number, since it uses less digits than its factorization.

402575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16113 (or 16108 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 402575 is about 634.4879825497. The cubic root of 402575 is about 73.8383982629.

Adding to 402575 its reverse (575204), we get a palindrome (977779).

The spelling of 402575 in words is "four hundred two thousand, five hundred seventy-five".