72473151 has 8 divisors (see below), whose sum is σ = 96790960. Its totient is φ = 48235392.

The previous prime is 72473147. The next prime is 72473171. The reversal of 72473151 is 15137427.

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

It is not a de Polignac number, because 72473151 - 2² = 72473147 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 (72473171) 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, 17866 + ... + 21543.

It is an arithmetic number, because the mean of its divisors is an integer number (12098870).

Almost surely, 2^72473151 is an apocalyptic number.

72473151 is a deficient number, since it is larger than the sum of its proper divisors (24317809).

72473151 is a wasteful number, since it uses less digits than its factorization.

72473151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40025.

The product of its digits is 5880, while the sum is 30.

The square root of 72473151 is about 8513.1164094003. The cubic root of 72473151 is about 416.9260661728.

The spelling of 72473151 in words is "seventy-two million, four hundred seventy-three thousand, one hundred fifty-one".