30877157 has 2 divisors, whose sum is σ = 30877158. Its totient is φ = 30877156.

The previous prime is 30877087. The next prime is 30877159. The reversal of 30877157 is 75177803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20079361 + 10797796 = 4481^2 + 3286^2 .

It is a cyclic number.

It is not a de Polignac number, because 30877157 - 2²² = 26682853 is a prime.

Together with 30877159, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30877157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30877159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15438578 + 15438579.

It is an arithmetic number, because the mean of its divisors is an integer number (15438579).

Almost surely, 2^30877157 is an apocalyptic number.

It is an amenable number.

30877157 is a deficient number, since it is larger than the sum of its proper divisors (1).

30877157 is an equidigital number, since it uses as much as digits as its factorization.

30877157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41160, while the sum is 38.

The square root of 30877157 is about 5556.7217853695. The cubic root of 30877157 is about 313.7225733289.

The spelling of 30877157 in words is "thirty million, eight hundred seventy-seven thousand, one hundred fifty-seven".