15427493 has 2 divisors, whose sum is σ = 15427494. Its totient is φ = 15427492.

The previous prime is 15427481. The next prime is 15427537. The reversal of 15427493 is 39472451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11175649 + 4251844 = 3343^2 + 2062^2 .

It is a cyclic number.

It is not a de Polignac number, because 15427493 - 2¹⁰ = 15426469 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15427393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7713746 + 7713747.

It is an arithmetic number, because the mean of its divisors is an integer number (7713747).

Almost surely, 2^15427493 is an apocalyptic number.

It is an amenable number.

15427493 is a deficient number, since it is larger than the sum of its proper divisors (1).

15427493 is an equidigital number, since it uses as much as digits as its factorization.

15427493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 15427493 is about 3927.7847446111. The cubic root of 15427493 is about 248.9421595409.

The spelling of 15427493 in words is "fifteen million, four hundred twenty-seven thousand, four hundred ninety-three".