72259553 has 2 divisors, whose sum is σ = 72259554. Its totient is φ = 72259552.

The previous prime is 72259549. The next prime is 72259559. The reversal of 72259553 is 35595227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70442449 + 1817104 = 8393^2 + 1348^2 .

It is a cyclic number.

It is not a de Polignac number, because 72259553 - 2² = 72259549 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (72259559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36129776 + 36129777.

It is an arithmetic number, because the mean of its divisors is an integer number (36129777).

Almost surely, 2^72259553 is an apocalyptic number.

It is an amenable number.

72259553 is a deficient number, since it is larger than the sum of its proper divisors (1).

72259553 is an equidigital number, since it uses as much as digits as its factorization.

72259553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94500, while the sum is 38.

The square root of 72259553 is about 8500.5619226025. The cubic root of 72259553 is about 416.5160651103.

The spelling of 72259553 in words is "seventy-two million, two hundred fifty-nine thousand, five hundred fifty-three".