505553938 has 32 divisors (see below), whose sum is σ = 844784640. Its totient is φ = 225807120.

The previous prime is 505553891. The next prime is 505553941. The reversal of 505553938 is 839355505.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 505553894 and 505553903.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57981 + ... + 66127.

It is an arithmetic number, because the mean of its divisors is an integer number (26399520).

Almost surely, 2^505553938 is an apocalyptic number.

505553938 is a deficient number, since it is larger than the sum of its proper divisors (339230702).

505553938 is a wasteful number, since it uses less digits than its factorization.

505553938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8262.

The product of its (nonzero) digits is 405000, while the sum is 43.

The square root of 505553938 is about 22484.5266349995. The cubic root of 505553938 is about 796.6284871284.

The spelling of 505553938 in words is "five hundred five million, five hundred fifty-three thousand, nine hundred thirty-eight".