551916851 has 2 divisors, whose sum is σ = 551916852. Its totient is φ = 551916850.

The previous prime is 551916829. The next prime is 551916899. The reversal of 551916851 is 158619155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551916851 - 2¹⁸ = 551654707 is a prime.

It is a super-2 number, since 2×551916851² = 609224420835512402, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 551916799 and 551916808.

It is not a weakly prime, because it can be changed into another prime (551916821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275958425 + 275958426.

It is an arithmetic number, because the mean of its divisors is an integer number (275958426).

Almost surely, 2^551916851 is an apocalyptic number.

551916851 is a deficient number, since it is larger than the sum of its proper divisors (1).

551916851 is an equidigital number, since it uses as much as digits as its factorization.

551916851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54000, while the sum is 41.

The square root of 551916851 is about 23492.9106540675. The cubic root of 551916851 is about 820.2719953329.

The spelling of 551916851 in words is "five hundred fifty-one million, nine hundred sixteen thousand, eight hundred fifty-one".