72589091 has 2 divisors, whose sum is σ = 72589092. Its totient is φ = 72589090.

The previous prime is 72589087. The next prime is 72589093. The reversal of 72589091 is 19098527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72589091 - 2² = 72589087 is a prime.

It is a super-2 number, since 2×72589091² = 10538352264412562, which contains 22 as substring.

Together with 72589093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72589093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36294545 + 36294546.

It is an arithmetic number, because the mean of its divisors is an integer number (36294546).

Almost surely, 2^72589091 is an apocalyptic number.

72589091 is a deficient number, since it is larger than the sum of its proper divisors (1).

72589091 is an equidigital number, since it uses as much as digits as its factorization.

72589091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 72589091 is about 8519.9231804049. The cubic root of 72589091 is about 417.1482756101.

The spelling of 72589091 in words is "seventy-two million, five hundred eighty-nine thousand, ninety-one".