15092981 has 2 divisors, whose sum is σ = 15092982. Its totient is φ = 15092980.

The previous prime is 15092977. The next prime is 15092983. The reversal of 15092981 is 18929051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14554225 + 538756 = 3815^2 + 734^2 .

It is an emirp because it is prime and its reverse (18929051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15092981 - 2² = 15092977 is a prime.

It is a super-2 number, since 2×15092981² = 455596150932722, which contains 22 as substring.

Together with 15092983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15092983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7546490 + 7546491.

It is an arithmetic number, because the mean of its divisors is an integer number (7546491).

Almost surely, 2^15092981 is an apocalyptic number.

It is an amenable number.

15092981 is a deficient number, since it is larger than the sum of its proper divisors (1).

15092981 is an equidigital number, since it uses as much as digits as its factorization.

15092981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 15092981 is about 3884.9685970417. The cubic root of 15092981 is about 247.1297378276.

The spelling of 15092981 in words is "fifteen million, ninety-two thousand, nine hundred eighty-one".