402555253 has 4 divisors (see below), whose sum is σ = 402752448. Its totient is φ = 402358060.

The previous prime is 402555233. The next prime is 402555281. The reversal of 402555253 is 352555204.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-402555253 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402555233) 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, 95503 + ... + 99628.

It is an arithmetic number, because the mean of its divisors is an integer number (100688112).

Almost surely, 2^402555253 is an apocalyptic number.

It is an amenable number.

402555253 is a deficient number, since it is larger than the sum of its proper divisors (197195).

402555253 is a wasteful number, since it uses less digits than its factorization.

402555253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197194.

The product of its (nonzero) digits is 30000, while the sum is 31.

The square root of 402555253 is about 20063.7796289732. The cubic root of 402555253 is about 738.3719094280.

The spelling of 402555253 in words is "four hundred two million, five hundred fifty-five thousand, two hundred fifty-three".