32573729 has 2 divisors, whose sum is σ = 32573730. Its totient is φ = 32573728.

The previous prime is 32573617. The next prime is 32573731. The reversal of 32573729 is 92737523.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26061025 + 6512704 = 5105^2 + 2552^2 .

It is a cyclic number.

It is not a de Polignac number, because 32573729 - 2¹⁶ = 32508193 is a prime.

It is a super-2 number, since 2×32573729² = 2122095641930882, which contains 22 as substring.

Together with 32573731, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 32573692 and 32573701.

It is not a weakly prime, because it can be changed into another prime (32573759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16286864 + 16286865.

It is an arithmetic number, because the mean of its divisors is an integer number (16286865).

Almost surely, 2^32573729 is an apocalyptic number.

It is an amenable number.

32573729 is a deficient number, since it is larger than the sum of its proper divisors (1).

32573729 is an equidigital number, since it uses as much as digits as its factorization.

32573729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 38.

The square root of 32573729 is about 5707.3399232918. The cubic root of 32573729 is about 319.3663535380.

The spelling of 32573729 in words is "thirty-two million, five hundred seventy-three thousand, seven hundred twenty-nine".