551401271 has 2 divisors, whose sum is σ = 551401272. Its totient is φ = 551401270.

The previous prime is 551401237. The next prime is 551401283. The reversal of 551401271 is 172104155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551401271 - 2¹⁰ = 551400247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551401271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551401211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275700635 + 275700636.

It is an arithmetic number, because the mean of its divisors is an integer number (275700636).

Almost surely, 2^551401271 is an apocalyptic number.

551401271 is a deficient number, since it is larger than the sum of its proper divisors (1).

551401271 is an equidigital number, since it uses as much as digits as its factorization.

551401271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 551401271 is about 23481.9349926704. The cubic root of 551401271 is about 820.0164933228.

The spelling of 551401271 in words is "five hundred fifty-one million, four hundred one thousand, two hundred seventy-one".