72501851 has 2 divisors, whose sum is σ = 72501852. Its totient is φ = 72501850.

The previous prime is 72501829. The next prime is 72501859. The reversal of 72501851 is 15810527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72501851 - 2²⁶ = 5392987 is a prime.

It is not a weakly prime, because it can be changed into another prime (72501859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36250925 + 36250926.

It is an arithmetic number, because the mean of its divisors is an integer number (36250926).

Almost surely, 2^72501851 is an apocalyptic number.

72501851 is a deficient number, since it is larger than the sum of its proper divisors (1).

72501851 is an equidigital number, since it uses as much as digits as its factorization.

72501851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 72501851 is about 8514.8018767321. The cubic root of 72501851 is about 416.9810943626.

The spelling of 72501851 in words is "seventy-two million, five hundred one thousand, eight hundred fifty-one".