72500387 has 2 divisors, whose sum is σ = 72500388. Its totient is φ = 72500386.

The previous prime is 72500357. The next prime is 72500401. The reversal of 72500387 is 78300527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72500387 - 2¹⁰ = 72499363 is a prime.

It is a super-2 number, since 2×72500387² = 10512612230299538, which contains 22 as substring.

It is equal to p_4256429 and since 72500387 and 4256429 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (72500317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36250193 + 36250194.

It is an arithmetic number, because the mean of its divisors is an integer number (36250194).

Almost surely, 2^72500387 is an apocalyptic number.

72500387 is a deficient number, since it is larger than the sum of its proper divisors (1).

72500387 is an equidigital number, since it uses as much as digits as its factorization.

72500387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 72500387 is about 8514.7159083554. The cubic root of 72500387 is about 416.9782877013.

The spelling of 72500387 in words is "seventy-two million, five hundred thousand, three hundred eighty-seven".