550972021 has 8 divisors (see below), whose sum is σ = 577236224. Its totient is φ = 525238560.

The previous prime is 550972007. The next prime is 550972039. The reversal of 550972021 is 120279055.

550972021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 550972021 - 2¹⁵ = 550939253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550972321) 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, 130560 + ... + 134713.

It is an arithmetic number, because the mean of its divisors is an integer number (72154528).

Almost surely, 2^550972021 is an apocalyptic number.

It is an amenable number.

550972021 is a deficient number, since it is larger than the sum of its proper divisors (26264203).

550972021 is a wasteful number, since it uses less digits than its factorization.

550972021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265371.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 550972021 is about 23472.7932083082. The cubic root of 550972021 is about 819.8036516796.

The spelling of 550972021 in words is "five hundred fifty million, nine hundred seventy-two thousand, twenty-one".