1551116 has 24 divisors (see below), whose sum is σ = 3204096. Its totient is φ = 642960.

The previous prime is 1551113. The next prime is 1551133. The reversal of 1551116 is 6111551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1551113) 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, 26 + ... + 1761.

It is an arithmetic number, because the mean of its divisors is an integer number (133504).

2^1551116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1551116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1602048).

1551116 is an abundant number, since it is smaller than the sum of its proper divisors (1652980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1551116 is a wasteful number, since it uses less digits than its factorization.

1551116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829 (or 1827 counting only the distinct ones).

The product of its digits is 150, while the sum is 20.

The square root of 1551116 is about 1245.4380755381. The cubic root of 1551116 is about 115.7572211316.

Adding to 1551116 its reverse (6111551), we get a palindrome (7662667).

The spelling of 1551116 in words is "one million, five hundred fifty-one thousand, one hundred sixteen".