57772129 has 2 divisors, whose sum is σ = 57772130. Its totient is φ = 57772128.

The previous prime is 57772111. The next prime is 57772163. The reversal of 57772129 is 92127775.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47059600 + 10712529 = 6860^2 + 3273^2 .

It is a cyclic number.

It is not a de Polignac number, because 57772129 - 2⁵ = 57772097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57772091 and 57772100.

It is not a weakly prime, because it can be changed into another prime (57772109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28886064 + 28886065.

It is an arithmetic number, because the mean of its divisors is an integer number (28886065).

Almost surely, 2^57772129 is an apocalyptic number.

It is an amenable number.

57772129 is a deficient number, since it is larger than the sum of its proper divisors (1).

57772129 is an equidigital number, since it uses as much as digits as its factorization.

57772129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61740, while the sum is 40.

The square root of 57772129 is about 7600.7979186399. The cubic root of 57772129 is about 386.5800673913.

The spelling of 57772129 in words is "fifty-seven million, seven hundred seventy-two thousand, one hundred twenty-nine".