551001018 has 16 divisors (see below), whose sum is σ = 1149915456. Its totient is φ = 175681440.

The previous prime is 551000987. The next prime is 551001049. The reversal of 551001018 is 810100155.

It is an interprime number because it is at equal distance from previous prime (551000987) and next prime (551001049).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 551000985 and 551001003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1996243 + ... + 1996518.

It is an arithmetic number, because the mean of its divisors is an integer number (71869716).

Almost surely, 2^551001018 is an apocalyptic number.

551001018 is an abundant number, since it is smaller than the sum of its proper divisors (598914438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551001018 is a wasteful number, since it uses less digits than its factorization.

551001018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3992789.

The product of its (nonzero) digits is 200, while the sum is 21.

The square root of 551001018 is about 23473.4108727300. The cubic root of 551001018 is about 819.8180331899.

The spelling of 551001018 in words is "five hundred fifty-one million, one thousand, eighteen".