505551427 has 2 divisors, whose sum is σ = 505551428. Its totient is φ = 505551426.

The previous prime is 505551419. The next prime is 505551437. The reversal of 505551427 is 724155505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505551427 - 2³ = 505551419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505551392 and 505551401.

It is not a weakly prime, because it can be changed into another prime (505551407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252775713 + 252775714.

It is an arithmetic number, because the mean of its divisors is an integer number (252775714).

Almost surely, 2^505551427 is an apocalyptic number.

505551427 is a deficient number, since it is larger than the sum of its proper divisors (1).

505551427 is an equidigital number, since it uses as much as digits as its factorization.

505551427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35000, while the sum is 34.

The square root of 505551427 is about 22484.4707965298. The cubic root of 505551427 is about 796.6271682204.

The spelling of 505551427 in words is "five hundred five million, five hundred fifty-one thousand, four hundred twenty-seven".