72554089 has 2 divisors, whose sum is σ = 72554090. Its totient is φ = 72554088.

The previous prime is 72554087. The next prime is 72554117. The reversal of 72554089 is 98045527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50651689 + 21902400 = 7117^2 + 4680^2 .

It is a cyclic number.

It is not a de Polignac number, because 72554089 - 2¹ = 72554087 is a prime.

Together with 72554087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (72554087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36277044 + 36277045.

It is an arithmetic number, because the mean of its divisors is an integer number (36277045).

Almost surely, 2^72554089 is an apocalyptic number.

It is an amenable number.

72554089 is a deficient number, since it is larger than the sum of its proper divisors (1).

72554089 is an equidigital number, since it uses as much as digits as its factorization.

72554089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 72554089 is about 8517.8688062214. The cubic root of 72554089 is about 417.0812160781.

The spelling of 72554089 in words is "seventy-two million, five hundred fifty-four thousand, eighty-nine".