30487157 has 2 divisors, whose sum is σ = 30487158. Its totient is φ = 30487156.

The previous prime is 30487147. The next prime is 30487181. The reversal of 30487157 is 75178403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18369796 + 12117361 = 4286^2 + 3481^2 .

It is a cyclic number.

It is not a de Polignac number, because 30487157 - 2⁴ = 30487141 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 (30487117) 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, 15243578 + 15243579.

It is an arithmetic number, because the mean of its divisors is an integer number (15243579).

Almost surely, 2^30487157 is an apocalyptic number.

It is an amenable number.

30487157 is a deficient number, since it is larger than the sum of its proper divisors (1).

30487157 is an equidigital number, since it uses as much as digits as its factorization.

30487157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 30487157 is about 5521.5176355781. The cubic root of 30487157 is about 312.3961280378.

The spelling of 30487157 in words is "thirty million, four hundred eighty-seven thousand, one hundred fifty-seven".