72417589 has 2 divisors, whose sum is σ = 72417590. Its totient is φ = 72417588.

The previous prime is 72417571. The next prime is 72417613. The reversal of 72417589 is 98571427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68194564 + 4223025 = 8258^2 + 2055^2 .

It is a cyclic number.

It is not a de Polignac number, because 72417589 - 2¹⁹ = 71893301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72417509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36208794 + 36208795.

It is an arithmetic number, because the mean of its divisors is an integer number (36208795).

Almost surely, 2^72417589 is an apocalyptic number.

It is an amenable number.

72417589 is a deficient number, since it is larger than the sum of its proper divisors (1).

72417589 is an equidigital number, since it uses as much as digits as its factorization.

72417589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 43.

The square root of 72417589 is about 8509.8524664062. The cubic root of 72417589 is about 416.8194925971.

The spelling of 72417589 in words is "seventy-two million, four hundred seventeen thousand, five hundred eighty-nine".