72529423 has 2 divisors, whose sum is σ = 72529424. Its totient is φ = 72529422.

The previous prime is 72529421. The next prime is 72529481. The reversal of 72529423 is 32492527.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72529423 - 2¹ = 72529421 is a prime.

Together with 72529421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72529421) 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, 36264711 + 36264712.

It is an arithmetic number, because the mean of its divisors is an integer number (36264712).

Almost surely, 2^72529423 is an apocalyptic number.

72529423 is a deficient number, since it is larger than the sum of its proper divisors (1).

72529423 is an equidigital number, since it uses as much as digits as its factorization.

72529423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 72529423 is about 8516.4207857527. The cubic root of 72529423 is about 417.0339460966.

The spelling of 72529423 in words is "seventy-two million, five hundred twenty-nine thousand, four hundred twenty-three".