15226493 has 2 divisors, whose sum is σ = 15226494. Its totient is φ = 15226492.

The previous prime is 15226489. The next prime is 15226501. The reversal of 15226493 is 39462251.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15031129 + 195364 = 3877^2 + 442^2 .

It is a cyclic number.

It is not a de Polignac number, because 15226493 - 2² = 15226489 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15226693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7613246 + 7613247.

It is an arithmetic number, because the mean of its divisors is an integer number (7613247).

Almost surely, 2^15226493 is an apocalyptic number.

It is an amenable number.

15226493 is a deficient number, since it is larger than the sum of its proper divisors (1).

15226493 is an equidigital number, since it uses as much as digits as its factorization.

15226493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 15226493 is about 3902.1139142777. The cubic root of 15226493 is about 247.8563000760.

The spelling of 15226493 in words is "fifteen million, two hundred twenty-six thousand, four hundred ninety-three".