72253133 has 2 divisors, whose sum is σ = 72253134. Its totient is φ = 72253132.

The previous prime is 72253117. The next prime is 72253183. The reversal of 72253133 is 33135227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44983849 + 27269284 = 6707^2 + 5222^2 .

It is a cyclic number.

It is not a de Polignac number, because 72253133 - 2⁴ = 72253117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72253183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36126566 + 36126567.

It is an arithmetic number, because the mean of its divisors is an integer number (36126567).

Almost surely, 2^72253133 is an apocalyptic number.

It is an amenable number.

72253133 is a deficient number, since it is larger than the sum of its proper divisors (1).

72253133 is an equidigital number, since it uses as much as digits as its factorization.

72253133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 26.

The square root of 72253133 is about 8500.1842921198. The cubic root of 72253133 is about 416.5037294296.

The spelling of 72253133 in words is "seventy-two million, two hundred fifty-three thousand, one hundred thirty-three".