72057929 has 2 divisors, whose sum is σ = 72057930. Its totient is φ = 72057928.

The previous prime is 72057913. The next prime is 72057941. The reversal of 72057929 is 92975027.

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., 51337225 + 20720704 = 7165^2 + 4552^2 .

It is a cyclic number.

It is not a de Polignac number, because 72057929 - 2⁴ = 72057913 is a prime.

It is not a weakly prime, because it can be changed into another prime (72057989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36028964 + 36028965.

It is an arithmetic number, because the mean of its divisors is an integer number (36028965).

Almost surely, 2^72057929 is an apocalyptic number.

It is an amenable number.

72057929 is a deficient number, since it is larger than the sum of its proper divisors (1).

72057929 is an equidigital number, since it uses as much as digits as its factorization.

72057929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 72057929 is about 8488.6941869760. The cubic root of 72057929 is about 416.1283061605.

The spelling of 72057929 in words is "seventy-two million, fifty-seven thousand, nine hundred twenty-nine".