505557654 has 32 divisors (see below), whose sum is σ = 1156515840. Its totient is φ = 144325632.

The previous prime is 505557653. The next prime is 505557671. The reversal of 505557654 is 456755505.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505557653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54907 + ... + 63449.

It is an arithmetic number, because the mean of its divisors is an integer number (36141120).

Almost surely, 2^505557654 is an apocalyptic number.

505557654 is an abundant number, since it is smaller than the sum of its proper divisors (650958186).

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

505557654 is a wasteful number, since it uses less digits than its factorization.

505557654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9964.

The product of its (nonzero) digits is 525000, while the sum is 42.

The square root of 505557654 is about 22484.6092694536. The cubic root of 505557654 is about 796.6304389572.

The spelling of 505557654 in words is "five hundred five million, five hundred fifty-seven thousand, six hundred fifty-four".