72351073 has 4 divisors (see below), whose sum is σ = 72368320. Its totient is φ = 72333828.

The previous prime is 72351061. The next prime is 72351079. The reversal of 72351073 is 37015327.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37015327 = 2459 ⋅15053.

It is a cyclic number.

It is not a de Polignac number, because 72351073 - 2⁹ = 72350561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72351079) 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, 2188 + ... + 12226.

It is an arithmetic number, because the mean of its divisors is an integer number (18092080).

Almost surely, 2^72351073 is an apocalyptic number.

It is an amenable number.

72351073 is a deficient number, since it is larger than the sum of its proper divisors (17247).

72351073 is a wasteful number, since it uses less digits than its factorization.

72351073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17246.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 72351073 is about 8505.9433927108. The cubic root of 72351073 is about 416.6918364173.

The spelling of 72351073 in words is "seventy-two million, three hundred fifty-one thousand, seventy-three".