30542849 has 2 divisors, whose sum is σ = 30542850. Its totient is φ = 30542848.

The previous prime is 30542833. The next prime is 30542867. The reversal of 30542849 is 94824503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22391824 + 8151025 = 4732^2 + 2855^2 .

It is a cyclic number.

It is not a de Polignac number, because 30542849 - 2⁴ = 30542833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30542819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15271424 + 15271425.

It is an arithmetic number, because the mean of its divisors is an integer number (15271425).

Almost surely, 2^30542849 is an apocalyptic number.

It is an amenable number.

30542849 is a deficient number, since it is larger than the sum of its proper divisors (1).

30542849 is an equidigital number, since it uses as much as digits as its factorization.

30542849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 30542849 is about 5526.5585132160. The cubic root of 30542849 is about 312.5862341216.

The spelling of 30542849 in words is "thirty million, five hundred forty-two thousand, eight hundred forty-nine".