72542567 has 2 divisors, whose sum is σ = 72542568. Its totient is φ = 72542566.

The previous prime is 72542563. The next prime is 72542599. The reversal of 72542567 is 76524527.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72542567 - 2² = 72542563 is a prime.

It is a super-4 number, since 4×72542567⁴ (a number of 33 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72542567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72542563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36271283 + 36271284.

It is an arithmetic number, because the mean of its divisors is an integer number (36271284).

Almost surely, 2^72542567 is an apocalyptic number.

72542567 is a deficient number, since it is larger than the sum of its proper divisors (1).

72542567 is an equidigital number, since it uses as much as digits as its factorization.

72542567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 38.

The square root of 72542567 is about 8517.1924364781. The cubic root of 72542567 is about 417.0591366233.

The spelling of 72542567 in words is "seventy-two million, five hundred forty-two thousand, five hundred sixty-seven".