72537447 has 8 divisors (see below), whose sum is σ = 97478656. Its totient is φ = 47977272.

The previous prime is 72537433. The next prime is 72537461. The reversal of 72537447 is 74473527.

It is an interprime number because it is at equal distance from previous prime (72537433) and next prime (72537461).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72537447 - 2⁸ = 72537191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72537467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94813 + ... + 95574.

It is an arithmetic number, because the mean of its divisors is an integer number (12184832).

Almost surely, 2^72537447 is an apocalyptic number.

72537447 is a deficient number, since it is larger than the sum of its proper divisors (24941209).

72537447 is a wasteful number, since it uses less digits than its factorization.

72537447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190517.

The product of its digits is 164640, while the sum is 39.

The square root of 72537447 is about 8516.8918626457. The cubic root of 72537447 is about 417.0493244854.

The spelling of 72537447 in words is "seventy-two million, five hundred thirty-seven thousand, four hundred forty-seven".