72534751 has 2 divisors, whose sum is σ = 72534752. Its totient is φ = 72534750.

The previous prime is 72534743. The next prime is 72534769. The reversal of 72534751 is 15743527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72534751 - 2³ = 72534743 is a prime.

It is a super-2 number, since 2×72534751² = 10522580205264002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72534151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36267375 + 36267376.

It is an arithmetic number, because the mean of its divisors is an integer number (36267376).

Almost surely, 2^72534751 is an apocalyptic number.

72534751 is a deficient number, since it is larger than the sum of its proper divisors (1).

72534751 is an equidigital number, since it uses as much as digits as its factorization.

72534751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29400, while the sum is 34.

The square root of 72534751 is about 8516.7335874735. The cubic root of 72534751 is about 417.0441575959.

The spelling of 72534751 in words is "seventy-two million, five hundred thirty-four thousand, seven hundred fifty-one".