505457 has 8 divisors (see below), whose sum is σ = 547200. Its totient is φ = 465264.

The previous prime is 505447. The next prime is 505459. The reversal of 505457 is 754505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505457 - 2⁸ = 505201 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 344 + ... + 1062.

It is an arithmetic number, because the mean of its divisors is an integer number (68400).

2⁵⁰⁵⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

505457 is a deficient number, since it is larger than the sum of its proper divisors (41743).

505457 is a wasteful number, since it uses less digits than its factorization.

505457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775.

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 505457 is about 710.9549915431. The cubic root of 505457 is about 79.6577567070.

The spelling of 505457 in words is "five hundred five thousand, four hundred fifty-seven".