15382481 has 2 divisors, whose sum is σ = 15382482. Its totient is φ = 15382480.

The previous prime is 15382459. The next prime is 15382483. The reversal of 15382481 is 18428351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15085456 + 297025 = 3884^2 + 545^2 .

It is a cyclic number.

It is not a de Polignac number, because 15382481 - 2¹⁴ = 15366097 is a prime.

It is a super-2 number, since 2×15382481² = 473241443430722, which contains 22 as substring.

Together with 15382483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15382483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7691240 + 7691241.

It is an arithmetic number, because the mean of its divisors is an integer number (7691241).

Almost surely, 2^15382481 is an apocalyptic number.

It is an amenable number.

15382481 is a deficient number, since it is larger than the sum of its proper divisors (1).

15382481 is an equidigital number, since it uses as much as digits as its factorization.

15382481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 32.

The square root of 15382481 is about 3922.0506116061. The cubic root of 15382481 is about 248.6998151329.

The spelling of 15382481 in words is "fifteen million, three hundred eighty-two thousand, four hundred eighty-one".