1426551 has 8 divisors (see below), whose sum is σ = 2173824. Its totient is φ = 815160.

The previous prime is 1426543. The next prime is 1426553. The reversal of 1426551 is 1556241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1426551 - 2³ = 1426543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1426553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33945 + ... + 33986.

It is an arithmetic number, because the mean of its divisors is an integer number (271728).

2^1426551 is an apocalyptic number.

1426551 is a deficient number, since it is larger than the sum of its proper divisors (747273).

1426551 is an equidigital number, since it uses as much as digits as its factorization.

1426551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67941.

The product of its digits is 1200, while the sum is 24.

The square root of 1426551 is about 1194.3831043681. The cubic root of 1426551 is about 112.5716679146.

It can be divided in two parts, 14 and 26551, that added together give a triangular number (26565 = T₂₃₀).

The spelling of 1426551 in words is "one million, four hundred twenty-six thousand, five hundred fifty-one".