1422551 has 8 divisors (see below), whose sum is σ = 1554000. Its totient is φ = 1294272.

The previous prime is 1422541. The next prime is 1422563. The reversal of 1422551 is 1552241.

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

It is a cyclic number.

It is not a de Polignac number, because 1422551 - 2¹⁰ = 1421527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200 + ... + 1698.

It is an arithmetic number, because the mean of its divisors is an integer number (194250).

2^1422551 is an apocalyptic number.

1422551 is a deficient number, since it is larger than the sum of its proper divisors (131449).

1422551 is a wasteful number, since it uses less digits than its factorization.

1422551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585.

The product of its digits is 400, while the sum is 20.

The square root of 1422551 is about 1192.7074243082. The cubic root of 1422551 is about 112.4663537242.

Adding to 1422551 its reverse (1552241), we get a palindrome (2974792).

The spelling of 1422551 in words is "one million, four hundred twenty-two thousand, five hundred fifty-one".