72315301 has 4 divisors (see below), whose sum is σ = 72332812. Its totient is φ = 72297792.

The previous prime is 72315283. The next prime is 72315307. The reversal of 72315301 is 10351327.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7834401 + 64480900 = 2799^2 + 8030^2 .

It is a cyclic number.

It is not a de Polignac number, because 72315301 - 2²³ = 63926693 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 (72315307) 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, 1255 + ... + 12091.

It is an arithmetic number, because the mean of its divisors is an integer number (18083203).

Almost surely, 2^72315301 is an apocalyptic number.

It is an amenable number.

72315301 is a deficient number, since it is larger than the sum of its proper divisors (17511).

72315301 is a wasteful number, since it uses less digits than its factorization.

72315301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17510.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 72315301 is about 8503.8403677397. The cubic root of 72315301 is about 416.6231511533.

Adding to 72315301 its reverse (10351327), we get a palindrome (82666628).

The spelling of 72315301 in words is "seventy-two million, three hundred fifteen thousand, three hundred one".