30655997 has 2 divisors, whose sum is σ = 30655998. Its totient is φ = 30655996.

The previous prime is 30655991. The next prime is 30656053. The reversal of 30655997 is 79955603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30349081 + 306916 = 5509^2 + 554^2 .

It is a cyclic number.

It is not a de Polignac number, because 30655997 - 2¹⁴ = 30639613 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30655991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15327998 + 15327999.

It is an arithmetic number, because the mean of its divisors is an integer number (15327999).

Almost surely, 2^30655997 is an apocalyptic number.

It is an amenable number.

30655997 is a deficient number, since it is larger than the sum of its proper divisors (1).

30655997 is an equidigital number, since it uses as much as digits as its factorization.

30655997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 255150, while the sum is 44.

The square root of 30655997 is about 5536.7858004442. The cubic root of 30655997 is about 312.9717572260.

The spelling of 30655997 in words is "thirty million, six hundred fifty-five thousand, nine hundred ninety-seven".