30210157 has 2 divisors, whose sum is σ = 30210158. Its totient is φ = 30210156.

The previous prime is 30210149. The next prime is 30210163. The reversal of 30210157 is 75101203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25462116 + 4748041 = 5046^2 + 2179^2 .

It is a cyclic number.

It is not a de Polignac number, because 30210157 - 2³ = 30210149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30210127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15105078 + 15105079.

It is an arithmetic number, because the mean of its divisors is an integer number (15105079).

Almost surely, 2^30210157 is an apocalyptic number.

It is an amenable number.

30210157 is a deficient number, since it is larger than the sum of its proper divisors (1).

30210157 is an equidigital number, since it uses as much as digits as its factorization.

30210157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 30210157 is about 5496.3767156191. The cubic root of 30210157 is about 311.4471258700.

The spelling of 30210157 in words is "thirty million, two hundred ten thousand, one hundred fifty-seven".