15145457 has 2 divisors, whose sum is σ = 15145458. Its totient is φ = 15145456.

The previous prime is 15145447. The next prime is 15145531. The reversal of 15145457 is 75454151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9928801 + 5216656 = 3151^2 + 2284^2 .

It is an emirp because it is prime and its reverse (75454151) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15145457 is a prime.

It is not a weakly prime, because it can be changed into another prime (15145447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7572728 + 7572729.

It is an arithmetic number, because the mean of its divisors is an integer number (7572729).

Almost surely, 2^15145457 is an apocalyptic number.

It is an amenable number.

15145457 is a deficient number, since it is larger than the sum of its proper divisors (1).

15145457 is an equidigital number, since it uses as much as digits as its factorization.

15145457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14000, while the sum is 32.

The square root of 15145457 is about 3891.7164593531. The cubic root of 15145457 is about 247.4158173722.

The spelling of 15145457 in words is "fifteen million, one hundred forty-five thousand, four hundred fifty-seven".