30290851 has 2 divisors, whose sum is σ = 30290852. Its totient is φ = 30290850.

The previous prime is 30290833. The next prime is 30290863. The reversal of 30290851 is 15809203.

It is a strong prime.

It is an emirp because it is prime and its reverse (15809203) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30290851 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30290251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15145425 + 15145426.

It is an arithmetic number, because the mean of its divisors is an integer number (15145426).

Almost surely, 2^30290851 is an apocalyptic number.

30290851 is a deficient number, since it is larger than the sum of its proper divisors (1).

30290851 is an equidigital number, since it uses as much as digits as its factorization.

30290851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 30290851 is about 5503.7124743213. The cubic root of 30290851 is about 311.7241802726.

The spelling of 30290851 in words is "thirty million, two hundred ninety thousand, eight hundred fifty-one".