402552052 has 18 divisors (see below), whose sum is σ = 819481362. Its totient is φ = 172522224.

The previous prime is 402552041. The next prime is 402552053. The reversal of 402552052 is 250255204.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 395771236 + 6780816 = 19894^2 + 2604^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402552053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1026723 + ... + 1027114.

Almost surely, 2^402552052 is an apocalyptic number.

It is an amenable number.

402552052 is an abundant number, since it is smaller than the sum of its proper divisors (416929310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402552052 is a wasteful number, since it uses less digits than its factorization.

402552052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053855 (or 2053846 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 402552052 is about 20063.6998582016. The cubic root of 402552052 is about 738.3699523180.

The spelling of 402552052 in words is "four hundred two million, five hundred fifty-two thousand, fifty-two".