15045745 has 24 divisors (see below), whose sum is σ = 21383208. Its totient is φ = 10095360.

The previous prime is 15045733. The next prime is 15045761. The reversal of 15045745 is 54754051.

15045745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1628176 + 13417569 = 1276^2 + 3663^2 .

It is a de Polignac number, because none of the positive numbers 2^k-15045745 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6909 + ... + 8821.

It is an arithmetic number, because the mean of its divisors is an integer number (890967).

Almost surely, 2^15045745 is an apocalyptic number.

It is an amenable number.

15045745 is a deficient number, since it is larger than the sum of its proper divisors (6337463).

15045745 is a wasteful number, since it uses less digits than its factorization.

15045745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953 (or 1942 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 15045745 is about 3878.8845045967. The cubic root of 15045745 is about 246.8716571678.

Adding to 15045745 its reverse (54754051), we get a palindrome (69799796).

The spelling of 15045745 in words is "fifteen million, forty-five thousand, seven hundred forty-five".