72452547 has 12 divisors (see below), whose sum is σ = 105152424. Its totient is φ = 48071520.

The previous prime is 72452543. The next prime is 72452551. The reversal of 72452547 is 74525427.

It is a happy number.

72452547 is a `hidden beast` number, since 72 + 45 + 2 + 547 = 666.

It is an interprime number because it is at equal distance from previous prime (72452543) and next prime (72452551).

It is not a de Polignac number, because 72452547 - 2² = 72452543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72452543) 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 11 ways as a sum of consecutive naturals, for example, 17178 + ... + 20975.

It is an arithmetic number, because the mean of its divisors is an integer number (8762702).

Almost surely, 2^72452547 is an apocalyptic number.

72452547 is a deficient number, since it is larger than the sum of its proper divisors (32699877).

72452547 is a wasteful number, since it uses less digits than its factorization.

72452547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38370 (or 38367 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 72452547 is about 8511.9061907425. The cubic root of 72452547 is about 416.8865519585.

The spelling of 72452547 in words is "seventy-two million, four hundred fifty-two thousand, five hundred forty-seven".