15272045 has 4 divisors (see below), whose sum is σ = 18326460. Its totient is φ = 12217632.

The previous prime is 15272041. The next prime is 15272051. The reversal of 15272045 is 54027251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54027251 = 149 ⋅362599.

It can be written as a sum of positive squares in 2 ways, for example, as 5822569 + 9449476 = 2413^2 + 3074^2 .

It is a cyclic number.

It is not a de Polignac number, because 15272045 - 2² = 15272041 is a prime.

It is a super-4 number, since 4×15272045⁴ (a number of 30 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15272041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1527200 + ... + 1527209.

It is an arithmetic number, because the mean of its divisors is an integer number (4581615).

Almost surely, 2^15272045 is an apocalyptic number.

It is an amenable number.

15272045 is a deficient number, since it is larger than the sum of its proper divisors (3054415).

15272045 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 8 representation: 15272045 = (72204155)₈.

15272045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3054414.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 15272045 is about 3907.9463916487. The cubic root of 15272045 is about 248.1032186105.

Adding to 15272045 its reverse (54027251), we get a palindrome (69299296).

The spelling of 15272045 in words is "fifteen million, two hundred seventy-two thousand, forty-five".