15492961 has 24 divisors (see below), whose sum is σ = 18768960. Its totient is φ = 12719520.

The previous prime is 15492959. The next prime is 15492979. The reversal of 15492961 is 16929451.

15492961 is a nontrivial binomial coefficient, being equal to C(5567, 2).

It is not a de Polignac number, because 15492961 - 2¹ = 15492959 is a prime.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 15492961.

It is not an unprimeable number, because it can be changed into a prime (15492941) 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 23 ways as a sum of consecutive naturals, for example, 52731 + ... + 53023.

It is an arithmetic number, because the mean of its divisors is an integer number (782040).

Almost surely, 2^15492961 is an apocalyptic number.

15492961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15492961 is the 5566-th triangular number.

15492961 is the 1856-th centered nonagonal number.

It is an amenable number.

15492961 is a deficient number, since it is larger than the sum of its proper divisors (3275999).

15492961 is a wasteful number, since it uses less digits than its factorization.

15492961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 346 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 15492961 is about 3936.1098815963. The cubic root of 15492961 is about 249.2937989990.

The spelling of 15492961 in words is "fifteen million, four hundred ninety-two thousand, nine hundred sixty-one".