72447151 has 8 divisors (see below), whose sum is σ = 83091584. Its totient is φ = 61876440.

The previous prime is 72447101. The next prime is 72447169. The reversal of 72447151 is 15174427.

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

It is a cyclic number.

It is not a de Polignac number, because 72447151 - 2¹³ = 72438959 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 (72447101) 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, 16305 + ... + 20266.

It is an arithmetic number, because the mean of its divisors is an integer number (10386448).

Almost surely, 2^72447151 is an apocalyptic number.

72447151 is a deficient number, since it is larger than the sum of its proper divisors (10644433).

72447151 is a wasteful number, since it uses less digits than its factorization.

72447151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36861.

The product of its digits is 7840, while the sum is 31.

The square root of 72447151 is about 8511.5892170616. The cubic root of 72447151 is about 416.8762023077.

The spelling of 72447151 in words is "seventy-two million, four hundred forty-seven thousand, one hundred fifty-one".