550989251 has 4 divisors (see below), whose sum is σ = 552524400. Its totient is φ = 549454104.

The previous prime is 550989221. The next prime is 550989253. The reversal of 550989251 is 152989055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 550989251 - 2¹⁴ = 550972867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550989253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767036 + ... + 767753.

It is an arithmetic number, because the mean of its divisors is an integer number (138131100).

Almost surely, 2^550989251 is an apocalyptic number.

550989251 is a deficient number, since it is larger than the sum of its proper divisors (1535149).

550989251 is a wasteful number, since it uses less digits than its factorization.

550989251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535148.

The product of its (nonzero) digits is 162000, while the sum is 44.

The square root of 550989251 is about 23473.1602260965. The cubic root of 550989251 is about 819.8121972252.

The spelling of 550989251 in words is "five hundred fifty million, nine hundred eighty-nine thousand, two hundred fifty-one".