305520049 has 2 divisors, whose sum is σ = 305520050. Its totient is φ = 305520048.

The previous prime is 305520043. The next prime is 305520071. The reversal of 305520049 is 940025503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281165824 + 24354225 = 16768^2 + 4935^2 .

It is a cyclic number.

It is not a de Polignac number, because 305520049 - 2³ = 305520041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 305519999 and 305520026.

It is not a weakly prime, because it can be changed into another prime (305520041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152760024 + 152760025.

It is an arithmetic number, because the mean of its divisors is an integer number (152760025).

Almost surely, 2^305520049 is an apocalyptic number.

It is an amenable number.

305520049 is a deficient number, since it is larger than the sum of its proper divisors (1).

305520049 is an equidigital number, since it uses as much as digits as its factorization.

305520049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 305520049 is about 17479.1318148242. The cubic root of 305520049 is about 673.5139132422.

It can be divided in two parts, 3055 and 20049, that added together give a square (23104 = 152²).

The spelling of 305520049 in words is "three hundred five million, five hundred twenty thousand, forty-nine".