72652231 has 2 divisors, whose sum is σ = 72652232. Its totient is φ = 72652230.

The previous prime is 72652211. The next prime is 72652247. The reversal of 72652231 is 13225627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72652231 - 2⁵ = 72652199 is a prime.

It is a super-2 number, since 2×72652231² = 10556693338554722, which contains 22 as substring.

It is equal to p_4264813 and since 72652231 and 4264813 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72652231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72652211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36326115 + 36326116.

It is an arithmetic number, because the mean of its divisors is an integer number (36326116).

Almost surely, 2^72652231 is an apocalyptic number.

72652231 is a deficient number, since it is larger than the sum of its proper divisors (1).

72652231 is an equidigital number, since it uses as much as digits as its factorization.

72652231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 72652231 is about 8523.6278074538. The cubic root of 72652231 is about 417.2691895965.

Adding to 72652231 its reverse (13225627), we get a palindrome (85877858).

The spelling of 72652231 in words is "seventy-two million, six hundred fifty-two thousand, two hundred thirty-one".