15199961 has 8 divisors (see below), whose sum is σ = 17433024. Its totient is φ = 12982320.

The previous prime is 15199957. The next prime is 15199963. The reversal of 15199961 is 16999151.

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

It is a cyclic number.

It is not a de Polignac number, because 15199961 - 2² = 15199957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15199963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1655 + ... + 5756.

It is an arithmetic number, because the mean of its divisors is an integer number (2179128).

Almost surely, 2^15199961 is an apocalyptic number.

It is an amenable number.

15199961 is a deficient number, since it is larger than the sum of its proper divisors (2233063).

15199961 is an equidigital number, since it uses as much as digits as its factorization.

15199961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7711.

The product of its digits is 21870, while the sum is 41.

The square root of 15199961 is about 3898.7127362759. The cubic root of 15199961 is about 247.7122540665.

The spelling of 15199961 in words is "fifteen million, one hundred ninety-nine thousand, nine hundred sixty-one".