505555040 has 48 divisors (see below), whose sum is σ = 1257243120. Its totient is φ = 191577600.

The previous prime is 505555033. The next prime is 505555067. The reversal of 505555040 is 40555505.

It is a junction number, because it is equal to n+sod(n) for n = 505554994 and 505555012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80111 + ... + 86190.

It is an arithmetic number, because the mean of its divisors is an integer number (26192565).

Almost surely, 2^505555040 is an apocalyptic number.

It is an amenable number.

505555040 is an abundant number, since it is smaller than the sum of its proper divisors (751688080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505555040 is a wasteful number, since it uses less digits than its factorization.

505555040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166335 (or 166327 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 29.

The square root of 505555040 is about 22484.5511407277. The cubic root of 505555040 is about 796.6290659549.

The spelling of 505555040 in words is "five hundred five million, five hundred fifty-five thousand, forty".