72560045 has 4 divisors (see below), whose sum is σ = 87072060. Its totient is φ = 58048032.

The previous prime is 72560027. The next prime is 72560077. The reversal of 72560045 is 54006527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54006527 = 991 ⋅54497.

It can be written as a sum of positive squares in 2 ways, for example, as 25623844 + 46936201 = 5062^2 + 6851^2 .

It is a cyclic number.

It is not a de Polignac number, because 72560045 - 2⁸ = 72559789 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7256000 + ... + 7256009.

It is an arithmetic number, because the mean of its divisors is an integer number (21768015).

Almost surely, 2^72560045 is an apocalyptic number.

It is an amenable number.

72560045 is a deficient number, since it is larger than the sum of its proper divisors (14512015).

72560045 is a wasteful number, since it uses less digits than its factorization.

72560045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14512014.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 72560045 is about 8518.2184170166. The cubic root of 72560045 is about 417.0926285649.

The spelling of 72560045 in words is "seventy-two million, five hundred sixty thousand, forty-five".