505772547 has 32 divisors (see below), whose sum is σ = 788004864. Its totient is φ = 282592800.

The previous prime is 505772513. The next prime is 505772551. The reversal of 505772547 is 745277505.

It is not a de Polignac number, because 505772547 - 2⁸ = 505772291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505772499 and 505772508.

It is not an unprimeable number, because it can be changed into a prime (505772447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 188022 + ... + 190692.

It is an arithmetic number, because the mean of its divisors is an integer number (24625152).

Almost surely, 2^505772547 is an apocalyptic number.

505772547 is a deficient number, since it is larger than the sum of its proper divisors (282232317).

505772547 is a wasteful number, since it uses less digits than its factorization.

505772547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879.

The product of its (nonzero) digits is 343000, while the sum is 42.

The square root of 505772547 is about 22489.3874305193. The cubic root of 505772547 is about 796.7432952285.

The spelling of 505772547 in words is "five hundred five million, seven hundred seventy-two thousand, five hundred forty-seven".