426808551 has 16 divisors (see below), whose sum is σ = 625895424. Its totient is φ = 257061984.

The previous prime is 426808549. The next prime is 426808553. The reversal of 426808551 is 155808624.

It is an interprime number because it is at equal distance from previous prime (426808549) and next prime (426808553).

It is not a de Polignac number, because 426808551 - 2¹ = 426808549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426808553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114591 + ... + 118256.

It is an arithmetic number, because the mean of its divisors is an integer number (39118464).

Almost surely, 2^426808551 is an apocalyptic number.

426808551 is a deficient number, since it is larger than the sum of its proper divisors (199086873).

426808551 is a wasteful number, since it uses less digits than its factorization.

426808551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232910.

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 426808551 is about 20659.3453671698. The cubic root of 426808551 is about 752.9122627750.

The spelling of 426808551 in words is "four hundred twenty-six million, eight hundred eight thousand, five hundred fifty-one".