72273351 has 4 divisors (see below), whose sum is σ = 96364472. Its totient is φ = 48182232.

The previous prime is 72273323. The next prime is 72273353. The reversal of 72273351 is 15337227.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 72273351 - 2⁵ = 72273319 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 (72273353) 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, 12045556 + ... + 12045561.

It is an arithmetic number, because the mean of its divisors is an integer number (24091118).

Almost surely, 2^72273351 is an apocalyptic number.

72273351 is a deficient number, since it is larger than the sum of its proper divisors (24091121).

72273351 is a wasteful number, since it uses less digits than its factorization.

72273351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24091120.

The product of its digits is 8820, while the sum is 30.

The square root of 72273351 is about 8501.3734772682. The cubic root of 72273351 is about 416.5425747443.

The spelling of 72273351 in words is "seventy-two million, two hundred seventy-three thousand, three hundred fifty-one".