505455 has 16 divisors (see below), whose sum is σ = 835584. Its totient is φ = 260640.

The previous prime is 505447. The next prime is 505459. The reversal of 505455 is 554505.

505455 = 58² + 59² + ... + 119².

It is not a de Polignac number, because 505455 - 2³ = 505447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79 + ... + 1008.

It is an arithmetic number, because the mean of its divisors is an integer number (52224).

2⁵⁰⁵⁴⁵⁵ is an apocalyptic number.

505455 is a deficient number, since it is larger than the sum of its proper divisors (330129).

505455 is a wasteful number, since it uses less digits than its factorization.

505455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126.

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 505455 is about 710.9535849829. The cubic root of 505455 is about 79.6576516432.

The spelling of 505455 in words is "five hundred five thousand, four hundred fifty-five".