72000751 has 2 divisors, whose sum is σ = 72000752. Its totient is φ = 72000750.

The previous prime is 72000743. The next prime is 72000767. The reversal of 72000751 is 15700027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72000751 - 2³ = 72000743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72000251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36000375 + 36000376.

It is an arithmetic number, because the mean of its divisors is an integer number (36000376).

Almost surely, 2^72000751 is an apocalyptic number.

72000751 is a deficient number, since it is larger than the sum of its proper divisors (1).

72000751 is an equidigital number, since it uses as much as digits as its factorization.

72000751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 72000751 is about 8485.3256272226. The cubic root of 72000751 is about 416.0182110340.

Adding to 72000751 its reverse (15700027), we get a palindrome (87700778).

The spelling of 72000751 in words is "seventy-two million, seven hundred fifty-one", and thus it is an aban number.