72254545 has 12 divisors (see below), whose sum is σ = 95305140. Its totient is φ = 52548320.

The previous prime is 72254543. The next prime is 72254551. The reversal of 72254545 is 54545227.

It can be written as a sum of positive squares in 2 ways, for example, as 21446161 + 50808384 = 4631^2 + 7128^2 .

It is not a de Polignac number, because 72254545 - 2¹ = 72254543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72254545.

It is not an unprimeable number, because it can be changed into a prime (72254543) 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, 59110 + ... + 60319.

It is an arithmetic number, because the mean of its divisors is an integer number (7942095).

Almost surely, 2^72254545 is an apocalyptic number.

It is an amenable number.

72254545 is a deficient number, since it is larger than the sum of its proper divisors (23050595).

72254545 is a wasteful number, since it uses less digits than its factorization.

72254545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119456 (or 119445 counting only the distinct ones).

The product of its digits is 56000, while the sum is 34.

The square root of 72254545 is about 8500.2673487367. The cubic root of 72254545 is about 416.5064425735.

The spelling of 72254545 in words is "seventy-two million, two hundred fifty-four thousand, five hundred forty-five".