72000547 has 4 divisors (see below), whose sum is σ = 72431856. Its totient is φ = 71569240.

The previous prime is 72000529. The next prime is 72000571. The reversal of 72000547 is 74500027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74500027 = 7 ⋅10642861.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72000547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72000517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215404 + ... + 215737.

It is an arithmetic number, because the mean of its divisors is an integer number (18107964).

Almost surely, 2^72000547 is an apocalyptic number.

72000547 is a deficient number, since it is larger than the sum of its proper divisors (431309).

72000547 is a wasteful number, since it uses less digits than its factorization.

72000547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431308.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 72000547 is about 8485.3136064615. The cubic root of 72000547 is about 416.0178181316.

The spelling of 72000547 in words is "seventy-two million, five hundred forty-seven", and thus it is an aban number.