72453013 has 4 divisors (see below), whose sum is σ = 75603168. Its totient is φ = 69302860.

The previous prime is 72452977. The next prime is 72453019. The reversal of 72453013 is 31035427.

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.

It is a cyclic number.

It is not a de Polignac number, because 72453013 - 2¹³ = 72444821 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 (72453019) 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, 1575043 + ... + 1575088.

It is an arithmetic number, because the mean of its divisors is an integer number (18900792).

Almost surely, 2^72453013 is an apocalyptic number.

It is an amenable number.

72453013 is a deficient number, since it is larger than the sum of its proper divisors (3150155).

72453013 is a wasteful number, since it uses less digits than its factorization.

72453013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150154.

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

The square root of 72453013 is about 8511.9335641204. The cubic root of 72453013 is about 416.8874457330.

The spelling of 72453013 in words is "seventy-two million, four hundred fifty-three thousand, thirteen".