1551442 has 16 divisors (see below), whose sum is σ = 2514240. Its totient is φ = 715792.

The previous prime is 1551383. The next prime is 1551449. The reversal of 1551442 is 2441551.

It is a pancake number, because a pancake can be divided into 1551442 parts by 1761 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (1551449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 753 + ... + 1915.

It is an arithmetic number, because the mean of its divisors is an integer number (157140).

2^1551442 is an apocalyptic number.

1551442 is a deficient number, since it is larger than the sum of its proper divisors (962798).

1551442 is a wasteful number, since it uses less digits than its factorization.

1551442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217.

The product of its digits is 800, while the sum is 22.

The square root of 1551442 is about 1245.5689463053. The cubic root of 1551442 is about 115.7653301771.

Adding to 1551442 its reverse (2441551), we get a palindrome (3992993).

The spelling of 1551442 in words is "one million, five hundred fifty-one thousand, four hundred forty-two".