551407 has 2 divisors, whose sum is σ = 551408. Its totient is φ = 551406.

The previous prime is 551387. The next prime is 551423. The reversal of 551407 is 704155.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275703 + 275704.

It is an arithmetic number, because the mean of its divisors is an integer number (275704).

2⁵⁵¹⁴⁰⁷ is an apocalyptic number.

551407 is a deficient number, since it is larger than the sum of its proper divisors (1).

551407 is an equidigital number, since it uses as much as digits as its factorization.

551407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 551407 is about 742.5678420185. The cubic root of 551407 is about 82.0019333274.

The spelling of 551407 in words is "five hundred fifty-one thousand, four hundred seven".