550251191 has 32 divisors (see below), whose sum is σ = 689472000. Its totient is φ = 428464512.

The previous prime is 550251167. The next prime is 550251197. The reversal of 550251191 is 191152055.

It is not a de Polignac number, because 550251191 - 2²² = 546056887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550251197) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 690005 + ... + 690801.

It is an arithmetic number, because the mean of its divisors is an integer number (21546000).

Almost surely, 2^550251191 is an apocalyptic number.

550251191 is a deficient number, since it is larger than the sum of its proper divisors (139220809).

550251191 is a wasteful number, since it uses less digits than its factorization.

550251191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031.

The product of its (nonzero) digits is 2250, while the sum is 29.

The square root of 550251191 is about 23457.4335979024. The cubic root of 550251191 is about 819.4459826042.

The spelling of 550251191 in words is "five hundred fifty million, two hundred fifty-one thousand, one hundred ninety-one".