402201515 has 4 divisors (see below), whose sum is σ = 482641824. Its totient is φ = 321761208.

The previous prime is 402201491. The next prime is 402201559. The reversal of 402201515 is 515102204.

402201515 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 402201515 - 2¹⁸ = 401939371 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 40220147 + ... + 40220156.

It is an arithmetic number, because the mean of its divisors is an integer number (120660456).

Almost surely, 2^402201515 is an apocalyptic number.

402201515 is a deficient number, since it is larger than the sum of its proper divisors (80440309).

402201515 is an equidigital number, since it uses as much as digits as its factorization.

402201515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80440308.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 402201515 is about 20054.9623534925. The cubic root of 402201515 is about 738.1555691507.

Adding to 402201515 its reverse (515102204), we get a palindrome (917303719).

The spelling of 402201515 in words is "four hundred two million, two hundred one thousand, five hundred fifteen".