72415751 has 2 divisors, whose sum is σ = 72415752. Its totient is φ = 72415750.

The previous prime is 72415727. The next prime is 72415769. The reversal of 72415751 is 15751427.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72415751 - 2²⁶ = 5306887 is a prime.

It is a Sophie Germain 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 (72415451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36207875 + 36207876.

It is an arithmetic number, because the mean of its divisors is an integer number (36207876).

Almost surely, 2^72415751 is an apocalyptic number.

72415751 is a deficient number, since it is larger than the sum of its proper divisors (1).

72415751 is an equidigital number, since it uses as much as digits as its factorization.

72415751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9800, while the sum is 32.

The square root of 72415751 is about 8509.7444732495. The cubic root of 72415751 is about 416.8159661946.

The spelling of 72415751 in words is "seventy-two million, four hundred fifteen thousand, seven hundred fifty-one".