72043315 has 4 divisors (see below), whose sum is σ = 86451984. Its totient is φ = 57634648.

The previous prime is 72043313. The next prime is 72043333. The reversal of 72043315 is 51334027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51334027 = 2503 ⋅20509.

It is a cyclic number.

It is not a de Polignac number, because 72043315 - 2¹ = 72043313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72043315.

It is not an unprimeable number, because it can be changed into a prime (72043313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7204327 + ... + 7204336.

It is an arithmetic number, because the mean of its divisors is an integer number (21612996).

Almost surely, 2^72043315 is an apocalyptic number.

72043315 is a deficient number, since it is larger than the sum of its proper divisors (14408669).

72043315 is a wasteful number, since it uses less digits than its factorization.

72043315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14408668.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 72043315 is about 8487.8333513330. The cubic root of 72043315 is about 416.1001727299.

The spelling of 72043315 in words is "seventy-two million, forty-three thousand, three hundred fifteen".