961427515 has 4 divisors (see below), whose sum is σ = 1153713024. Its totient is φ = 769142008.

The previous prime is 961427483. The next prime is 961427561. The reversal of 961427515 is 515724169.

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 961427515 - 2⁵ = 961427483 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96142747 + ... + 96142756.

It is an arithmetic number, because the mean of its divisors is an integer number (288428256).

Almost surely, 2^961427515 is an apocalyptic number.

961427515 is a deficient number, since it is larger than the sum of its proper divisors (192285509).

961427515 is a wasteful number, since it uses less digits than its factorization.

961427515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192285508.

The product of its digits is 75600, while the sum is 40.

The square root of 961427515 is about 31006.8946365159. The cubic root of 961427515 is about 986.9735535036.

The spelling of 961427515 in words is "nine hundred sixty-one million, four hundred twenty-seven thousand, five hundred fifteen".