72452445 has 32 divisors (see below), whose sum is σ = 126908544. Its totient is φ = 35078400.

The previous prime is 72452441. The next prime is 72452467. The reversal of 72452445 is 54425427.

It is not a de Polignac number, because 72452445 - 2² = 72452441 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72452441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8850 + ... + 14940.

It is an arithmetic number, because the mean of its divisors is an integer number (3965892).

Almost surely, 2^72452445 is an apocalyptic number.

It is an amenable number.

72452445 is a deficient number, since it is larger than the sum of its proper divisors (54456099).

72452445 is a wasteful number, since it uses less digits than its factorization.

72452445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6173.

The product of its digits is 44800, while the sum is 33.

The square root of 72452445 is about 8511.9001991330. The cubic root of 72452445 is about 416.8863563249.

The spelling of 72452445 in words is "seventy-two million, four hundred fifty-two thousand, four hundred forty-five".