505551023 has 2 divisors, whose sum is σ = 505551024. Its totient is φ = 505551022.

The previous prime is 505550987. The next prime is 505551037. The reversal of 505551023 is 320155505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505551023 - 2⁶ = 505550959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505550983 and 505551001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505551073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252775511 + 252775512.

It is an arithmetic number, because the mean of its divisors is an integer number (252775512).

Almost surely, 2^505551023 is an apocalyptic number.

505551023 is a deficient number, since it is larger than the sum of its proper divisors (1).

505551023 is an equidigital number, since it uses as much as digits as its factorization.

505551023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 505551023 is about 22484.4618125496. The cubic root of 505551023 is about 796.6269560182.

The spelling of 505551023 in words is "five hundred five million, five hundred fifty-one thousand, twenty-three".