72301015 has 4 divisors (see below), whose sum is σ = 86761224. Its totient is φ = 57840808.

The previous prime is 72301007. The next prime is 72301093. The reversal of 72301015 is 51010327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51010327 = 53 ⋅962459.

It is a cyclic number.

It is not a de Polignac number, because 72301015 - 2³ = 72301007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72300983 and 72301001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7230097 + ... + 7230106.

It is an arithmetic number, because the mean of its divisors is an integer number (21690306).

Almost surely, 2^72301015 is an apocalyptic number.

72301015 is a deficient number, since it is larger than the sum of its proper divisors (14460209).

72301015 is a wasteful number, since it uses less digits than its factorization.

72301015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14460208.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 72301015 is about 8503.0003528166. Note that the first 3 decimals coincide. The cubic root of 72301015 is about 416.5957144964.

The spelling of 72301015 in words is "seventy-two million, three hundred one thousand, fifteen".