15315051 has 8 divisors (see below), whose sum is σ = 20446864. Its totient is φ = 10196640.

The previous prime is 15315049. The next prime is 15315059. The reversal of 15315051 is 15051351.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15315051 - 2¹ = 15315049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15315059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280 + ... + 5541.

It is an arithmetic number, because the mean of its divisors is an integer number (2555858).

Almost surely, 2^15315051 is an apocalyptic number.

15315051 is a deficient number, since it is larger than the sum of its proper divisors (5131813).

15315051 is an equidigital number, since it uses as much as digits as its factorization.

15315051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6701.

The product of its (nonzero) digits is 375, while the sum is 21.

The square root of 15315051 is about 3913.4449018735. Note that the first 3 decimals coincide. The cubic root of 15315051 is about 248.3358861451.

The spelling of 15315051 in words is "fifteen million, three hundred fifteen thousand, fifty-one".