30087997 has 2 divisors, whose sum is σ = 30087998. Its totient is φ = 30087996.

The previous prime is 30087991. The next prime is 30088021. The reversal of 30087997 is 79978003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16736281 + 13351716 = 4091^2 + 3654^2 .

It is a cyclic number.

It is not a de Polignac number, because 30087997 - 2¹⁵ = 30055229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30087991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15043998 + 15043999.

It is an arithmetic number, because the mean of its divisors is an integer number (15043999).

Almost surely, 2^30087997 is an apocalyptic number.

It is an amenable number.

30087997 is a deficient number, since it is larger than the sum of its proper divisors (1).

30087997 is an equidigital number, since it uses as much as digits as its factorization.

30087997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 30087997 is about 5485.2526833319. The cubic root of 30087997 is about 311.0267619640.

The spelling of 30087997 in words is "thirty million, eighty-seven thousand, nine hundred ninety-seven".