15047881 has 2 divisors, whose sum is σ = 15047882. Its totient is φ = 15047880.

The previous prime is 15047843. The next prime is 15047899. The reversal of 15047881 is 18874051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13249600 + 1798281 = 3640^2 + 1341^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15047881 is a prime.

It is a super-2 number, since 2×15047881² = 452877445180322, which contains 22 as substring.

It is equal to p₉₇₃₆₀₉ and since 15047881 and 973609 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (15047801) 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 as a sum of consecutive naturals, namely, 7523940 + 7523941.

It is an arithmetic number, because the mean of its divisors is an integer number (7523941).

Almost surely, 2^15047881 is an apocalyptic number.

It is an amenable number.

15047881 is a deficient number, since it is larger than the sum of its proper divisors (1).

15047881 is an equidigital number, since it uses as much as digits as its factorization.

15047881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 15047881 is about 3879.1598317161. The cubic root of 15047881 is about 246.8833391618.

The spelling of 15047881 in words is "fifteen million, forty-seven thousand, eight hundred eighty-one".