402252515 has 24 divisors (see below), whose sum is σ = 591071760. Its totient is φ = 261309888.

The previous prime is 402252511. The next prime is 402252547. The reversal of 402252515 is 515252204.

It is not a de Polignac number, because 402252515 - 2² = 402252511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402252511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38552 + ... + 47861.

It is an arithmetic number, because the mean of its divisors is an integer number (24627990).

Almost surely, 2^402252515 is an apocalyptic number.

402252515 is a deficient number, since it is larger than the sum of its proper divisors (188819245).

402252515 is a wasteful number, since it uses less digits than its factorization.

402252515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86451 (or 86444 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 402252515 is about 20056.2338189402. The cubic root of 402252515 is about 738.1867677262.

The spelling of 402252515 in words is "four hundred two million, two hundred fifty-two thousand, five hundred fifteen".