402545233 has 4 divisors (see below), whose sum is σ = 402597540. Its totient is φ = 402492928.

The previous prime is 402545207. The next prime is 402545243. The reversal of 402545233 is 332545204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12759184 + 389786049 = 3572^2 + 19743^2 .

It is a cyclic number.

It is not a de Polignac number, because 402545233 - 2²⁵ = 368990801 is a prime.

It is a super-2 number, since 2×402545233² = 324085329222048578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402545203) 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, 12088 + ... + 30841.

It is an arithmetic number, because the mean of its divisors is an integer number (100649385).

Almost surely, 2^402545233 is an apocalyptic number.

It is an amenable number.

402545233 is a deficient number, since it is larger than the sum of its proper divisors (52307).

402545233 is an equidigital number, since it uses as much as digits as its factorization.

402545233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52306.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 402545233 is about 20063.5299237198. The cubic root of 402545233 is about 738.3657831072.

The spelling of 402545233 in words is "four hundred two million, five hundred forty-five thousand, two hundred thirty-three".