15145247 has 16 divisors (see below), whose sum is σ = 17492160. Its totient is φ = 13010976.

The previous prime is 15145243. The next prime is 15145307. The reversal of 15145247 is 74254151.

It is not a de Polignac number, because 15145247 - 2² = 15145243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15145243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409313 + ... + 409349.

It is an arithmetic number, because the mean of its divisors is an integer number (1093260).

Almost surely, 2^15145247 is an apocalyptic number.

15145247 is a deficient number, since it is larger than the sum of its proper divisors (2346913).

15145247 is an frugal number, since it uses more digits than its factorization.

15145247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 73 counting only the distinct ones).

The product of its digits is 5600, while the sum is 29.

The square root of 15145247 is about 3891.6894788768. The cubic root of 15145247 is about 247.4146738486.

Adding to 15145247 its reverse (74254151), we get a palindrome (89399398).

The spelling of 15145247 in words is "fifteen million, one hundred forty-five thousand, two hundred forty-seven".