402653522 has 4 divisors (see below), whose sum is σ = 603980286. Its totient is φ = 201326760.

The previous prime is 402653509. The next prime is 402653527. The reversal of 402653522 is 225356204.

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

It can be written as a sum of positive squares in only one way, i.e., 386161801 + 16491721 = 19651^2 + 4061^2 .

It is not an unprimeable number, because it can be changed into a prime (402653527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100663379 + ... + 100663382.

Almost surely, 2^402653522 is an apocalyptic number.

402653522 is a deficient number, since it is larger than the sum of its proper divisors (201326764).

402653522 is a wasteful number, since it uses less digits than its factorization.

402653522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201326763.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 402653522 is about 20066.2283949924. The cubic root of 402653522 is about 738.4319866184.

It can be divided in two parts, 40 and 2653522, that added together give a palindrome (2653562).

The spelling of 402653522 in words is "four hundred two million, six hundred fifty-three thousand, five hundred twenty-two".