72538951 has 2 divisors, whose sum is σ = 72538952. Its totient is φ = 72538950.

The previous prime is 72538937. The next prime is 72539003. The reversal of 72538951 is 15983527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72538951 - 2⁵ = 72538919 is a prime.

It is a Chen prime.

It is equal to p_4258597 and since 72538951 and 4258597 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72538901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36269475 + 36269476.

It is an arithmetic number, because the mean of its divisors is an integer number (36269476).

Almost surely, 2^72538951 is an apocalyptic number.

72538951 is a deficient number, since it is larger than the sum of its proper divisors (1).

72538951 is an equidigital number, since it uses as much as digits as its factorization.

72538951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 40.

The square root of 72538951 is about 8516.9801573093. The cubic root of 72538951 is about 417.0522068488.

The spelling of 72538951 in words is "seventy-two million, five hundred thirty-eight thousand, nine hundred fifty-one".