550664538 has 32 divisors (see below), whose sum is σ = 1125290880. Its totient is φ = 179604480.

The previous prime is 550664531. The next prime is 550664567. The reversal of 550664538 is 835466055.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 550664538.

It is not an unprimeable number, because it can be changed into a prime (550664531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46483 + ... + 57113.

It is an arithmetic number, because the mean of its divisors is an integer number (35165340).

Almost surely, 2^550664538 is an apocalyptic number.

550664538 is an abundant number, since it is smaller than the sum of its proper divisors (574626342).

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

550664538 is a wasteful number, since it uses less digits than its factorization.

550664538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10822.

The product of its (nonzero) digits is 432000, while the sum is 42.

The square root of 550664538 is about 23466.2425198411. The cubic root of 550664538 is about 819.6511196795.

The spelling of 550664538 in words is "five hundred fifty million, six hundred sixty-four thousand, five hundred thirty-eight".