550331001 has 24 divisors (see below), whose sum is σ = 872736384. Its totient is φ = 331400160.

The previous prime is 550330997. The next prime is 550331063. The reversal of 550331001 is 100133055.

It is a happy number.

It is not a de Polignac number, because 550331001 - 2² = 550330997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550331801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2161 + ... + 33246.

It is an arithmetic number, because the mean of its divisors is an integer number (36364016).

Almost surely, 2^550331001 is an apocalyptic number.

It is an amenable number.

550331001 is a deficient number, since it is larger than the sum of its proper divisors (322405383).

550331001 is a wasteful number, since it uses less digits than its factorization.

550331001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35581 (or 35578 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 550331001 is about 23459.1347027123. The cubic root of 550331001 is about 819.4855989487.

Adding to 550331001 its reverse (100133055), we get a palindrome (650464056).

The spelling of 550331001 in words is "five hundred fifty million, three hundred thirty-one thousand, one".