30800557 has 4 divisors (see below), whose sum is σ = 31455936. Its totient is φ = 30145180.

The previous prime is 30800551. The next prime is 30800569. The reversal of 30800557 is 75500803.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30800557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30800551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327619 + ... + 327712.

It is an arithmetic number, because the mean of its divisors is an integer number (7863984).

Almost surely, 2^30800557 is an apocalyptic number.

It is an amenable number.

30800557 is a deficient number, since it is larger than the sum of its proper divisors (655379).

30800557 is an equidigital number, since it uses as much as digits as its factorization.

30800557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655378.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 30800557 is about 5549.8249521944. The cubic root of 30800557 is about 313.4629310233.

The spelling of 30800557 in words is "thirty million, eight hundred thousand, five hundred fifty-seven".