30641057 has 2 divisors, whose sum is σ = 30641058. Its totient is φ = 30641056.

The previous prime is 30641047. The next prime is 30641087. The reversal of 30641057 is 75014603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29986576 + 654481 = 5476^2 + 809^2 .

It is a cyclic number.

It is not a de Polignac number, because 30641057 - 2¹² = 30636961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30641047) 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, 15320528 + 15320529.

It is an arithmetic number, because the mean of its divisors is an integer number (15320529).

Almost surely, 2^30641057 is an apocalyptic number.

It is an amenable number.

30641057 is a deficient number, since it is larger than the sum of its proper divisors (1).

30641057 is an equidigital number, since it uses as much as digits as its factorization.

30641057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 30641057 is about 5535.4364778218. The cubic root of 30641057 is about 312.9209073838.

The spelling of 30641057 in words is "thirty million, six hundred forty-one thousand, fifty-seven".