15994051 has 4 divisors (see below), whose sum is σ = 16545600. Its totient is φ = 15442504.

The previous prime is 15994037. The next prime is 15994063. The reversal of 15994051 is 15049951.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15049951 = 7 ⋅2149993.

It is a cyclic number.

It is not a de Polignac number, because 15994051 - 2⁵ = 15994019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15993998 and 15994016.

It is not an unprimeable number, because it can be changed into a prime (15994001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275731 + ... + 275788.

It is an arithmetic number, because the mean of its divisors is an integer number (4136400).

Almost surely, 2^15994051 is an apocalyptic number.

15994051 is a deficient number, since it is larger than the sum of its proper divisors (551549).

15994051 is an equidigital number, since it uses as much as digits as its factorization.

15994051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551548.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 15994051 is about 3999.2563058649. The cubic root of 15994051 is about 251.9529758145.

The spelling of 15994051 in words is "fifteen million, nine hundred ninety-four thousand, fifty-one".