15452145 has 12 divisors (see below), whose sum is σ = 26783796. Its totient is φ = 8241120.

The previous prime is 15452141. The next prime is 15452147. The reversal of 15452145 is 54125451.

It can be written as a sum of positive squares in 2 ways, for example, as 11614464 + 3837681 = 3408^2 + 1959^2 .

It is not a de Polignac number, because 15452145 - 2² = 15452141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15452141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171646 + ... + 171735.

It is an arithmetic number, because the mean of its divisors is an integer number (2231983).

Almost surely, 2^15452145 is an apocalyptic number.

15452145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15452145 is a deficient number, since it is larger than the sum of its proper divisors (11331651).

15452145 is a wasteful number, since it uses less digits than its factorization.

15452145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343392 (or 343389 counting only the distinct ones).

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

The square root of 15452145 is about 3930.9216476547. The cubic root of 15452145 is about 249.0746860686.

Adding to 15452145 its reverse (54125451), we get a palindrome (69577596).

It can be divided in two parts, 1545 and 2145, that multiplied together give a triangular number (3314025 = T₂₅₇₄).

The spelling of 15452145 in words is "fifteen million, four hundred fifty-two thousand, one hundred forty-five".