551420011 has 4 divisors (see below), whose sum is σ = 551516800. Its totient is φ = 551323224.

The previous prime is 551419993. The next prime is 551420017. The reversal of 551420011 is 110024155.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551420011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551420017) 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, 39276 + ... + 51433.

It is an arithmetic number, because the mean of its divisors is an integer number (137879200).

Almost surely, 2^551420011 is an apocalyptic number.

551420011 is a deficient number, since it is larger than the sum of its proper divisors (96789).

551420011 is an equidigital number, since it uses as much as digits as its factorization.

551420011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96788.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 551420011 is about 23482.3340194283. The cubic root of 551420011 is about 820.0257829490.

Adding to 551420011 its reverse (110024155), we get a palindrome (661444166).

The spelling of 551420011 in words is "five hundred fifty-one million, four hundred twenty thousand, eleven".