550535021 has 8 divisors (see below), whose sum is σ = 584464320. Its totient is φ = 516777408.

The previous prime is 550534997. The next prime is 550535057. The reversal of 550535021 is 120535055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550535021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550535071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36281 + ... + 49166.

It is an arithmetic number, because the mean of its divisors is an integer number (73058040).

Almost surely, 2^550535021 is an apocalyptic number.

It is an amenable number.

550535021 is a deficient number, since it is larger than the sum of its proper divisors (33929299).

550535021 is a wasteful number, since it uses less digits than its factorization.

550535021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85843.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 550535021 is about 23463.4827125046. The cubic root of 550535021 is about 819.5868536453.

The spelling of 550535021 in words is "five hundred fifty million, five hundred thirty-five thousand, twenty-one".