72481823 has 2 divisors, whose sum is σ = 72481824. Its totient is φ = 72481822.

The previous prime is 72481807. The next prime is 72481831. The reversal of 72481823 is 32818427.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72481823 - 2⁴ = 72481807 is a prime.

It is a super-2 number, since 2×72481823² = 10507229330806658, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72481883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36240911 + 36240912.

It is an arithmetic number, because the mean of its divisors is an integer number (36240912).

Almost surely, 2^72481823 is an apocalyptic number.

72481823 is a deficient number, since it is larger than the sum of its proper divisors (1).

72481823 is an equidigital number, since it uses as much as digits as its factorization.

72481823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 35.

The square root of 72481823 is about 8513.6257258585. The cubic root of 72481823 is about 416.9426950374.

The spelling of 72481823 in words is "seventy-two million, four hundred eighty-one thousand, eight hundred twenty-three".