402515045 has 16 divisors (see below), whose sum is σ = 507619200. Its totient is φ = 306016704.

The previous prime is 402515023. The next prime is 402515053. The reversal of 402515045 is 540515204.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402515045 is a prime.

It is a super-2 number, since 2×402515045² = 324036722902704050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 17345 + ... + 33254.

It is an arithmetic number, because the mean of its divisors is an integer number (31726200).

Almost surely, 2^402515045 is an apocalyptic number.

It is an amenable number.

402515045 is a deficient number, since it is larger than the sum of its proper divisors (105104155).

402515045 is a wasteful number, since it uses less digits than its factorization.

402515045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50684.

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

The square root of 402515045 is about 20062.7775993256. Note that the first 3 decimals coincide. The cubic root of 402515045 is about 738.3473252697.

The spelling of 402515045 in words is "four hundred two million, five hundred fifteen thousand, forty-five".