505457951 has 2 divisors, whose sum is σ = 505457952. Its totient is φ = 505457950.

The previous prime is 505457941. The next prime is 505457971. The reversal of 505457951 is 159754505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505457951 - 2¹⁴ = 505441567 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505457899 and 505457908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505457921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252728975 + 252728976.

It is an arithmetic number, because the mean of its divisors is an integer number (252728976).

Almost surely, 2^505457951 is an apocalyptic number.

505457951 is a deficient number, since it is larger than the sum of its proper divisors (1).

505457951 is an equidigital number, since it uses as much as digits as its factorization.

505457951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157500, while the sum is 41.

The square root of 505457951 is about 22482.3920213130. The cubic root of 505457951 is about 796.5780666472.

The spelling of 505457951 in words is "five hundred five million, four hundred fifty-seven thousand, nine hundred fifty-one".