15082381 has 2 divisors, whose sum is σ = 15082382. Its totient is φ = 15082380.

The previous prime is 15082367. The next prime is 15082387. The reversal of 15082381 is 18328051.

15082381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12075625 + 3006756 = 3475^2 + 1734^2 .

It is a cyclic number.

It is not a de Polignac number, because 15082381 - 2²³ = 6693773 is a prime.

It is a super-2 number, since 2×15082381² = 454956433258322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15082387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7541190 + 7541191.

It is an arithmetic number, because the mean of its divisors is an integer number (7541191).

Almost surely, 2^15082381 is an apocalyptic number.

It is an amenable number.

15082381 is a deficient number, since it is larger than the sum of its proper divisors (1).

15082381 is an equidigital number, since it uses as much as digits as its factorization.

15082381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 15082381 is about 3883.6041250364. The cubic root of 15082381 is about 247.0718701182.

The spelling of 15082381 in words is "fifteen million, eighty-two thousand, three hundred eighty-one".