72024157 has 2 divisors, whose sum is σ = 72024158. Its totient is φ = 72024156.

The previous prime is 72024151. The next prime is 72024203. The reversal of 72024157 is 75142027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70913241 + 1110916 = 8421^2 + 1054^2 .

It is a cyclic number.

It is not a de Polignac number, because 72024157 - 2¹⁵ = 71991389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72024151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36012078 + 36012079.

It is an arithmetic number, because the mean of its divisors is an integer number (36012079).

Almost surely, 2^72024157 is an apocalyptic number.

It is an amenable number.

72024157 is a deficient number, since it is larger than the sum of its proper divisors (1).

72024157 is an equidigital number, since it uses as much as digits as its factorization.

72024157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 72024157 is about 8486.7047197366. The cubic root of 72024157 is about 416.0632858754.

The spelling of 72024157 in words is "seventy-two million, twenty-four thousand, one hundred fifty-seven".