72505183 has 2 divisors, whose sum is σ = 72505184. Its totient is φ = 72505182.

The previous prime is 72505151. The next prime is 72505229. The reversal of 72505183 is 38150527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72505183 - 2⁵ = 72505151 is a prime.

It is equal to p_4256707 and since 72505183 and 4256707 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72505123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36252591 + 36252592.

It is an arithmetic number, because the mean of its divisors is an integer number (36252592).

Almost surely, 2^72505183 is an apocalyptic number.

72505183 is a deficient number, since it is larger than the sum of its proper divisors (1).

72505183 is an equidigital number, since it uses as much as digits as its factorization.

72505183 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 72505183 is about 8514.9975337636. The cubic root of 72505183 is about 416.9874820603.

The spelling of 72505183 in words is "seventy-two million, five hundred five thousand, one hundred eighty-three".