30772757 has 2 divisors, whose sum is σ = 30772758. Its totient is φ = 30772756.

The previous prime is 30772717. The next prime is 30772769. The reversal of 30772757 is 75727703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30758116 + 14641 = 5546^2 + 121^2 .

It is a cyclic number.

It is not a de Polignac number, because 30772757 - 2⁸ = 30772501 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30772757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30772717) 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, 15386378 + 15386379.

It is an arithmetic number, because the mean of its divisors is an integer number (15386379).

Almost surely, 2^30772757 is an apocalyptic number.

It is an amenable number.

30772757 is a deficient number, since it is larger than the sum of its proper divisors (1).

30772757 is an equidigital number, since it uses as much as digits as its factorization.

30772757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72030, while the sum is 38.

The square root of 30772757 is about 5547.3198032924. The cubic root of 30772757 is about 313.3685940651.

The spelling of 30772757 in words is "thirty million, seven hundred seventy-two thousand, seven hundred fifty-seven".