15145245 has 32 divisors (see below), whose sum is σ = 27561600. Its totient is φ = 7886592.

The previous prime is 15145243. The next prime is 15145307. The reversal of 15145245 is 54254151.

It is not a de Polignac number, because 15145245 - 2¹ = 15145243 is a prime.

It is a super-2 number, since 2×15145245² = 458756892220050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4501 + ... + 7109.

It is an arithmetic number, because the mean of its divisors is an integer number (861300).

Almost surely, 2^15145245 is an apocalyptic number.

15145245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15145245 is a deficient number, since it is larger than the sum of its proper divisors (12416355).

15145245 is a wasteful number, since it uses less digits than its factorization.

15145245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666 (or 2660 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 15145245 is about 3891.6892219189. The cubic root of 15145245 is about 247.4146629578.

Adding to 15145245 its reverse (54254151), we get a palindrome (69399396).

The spelling of 15145245 in words is "fifteen million, one hundred forty-five thousand, two hundred forty-five".