1553116 has 12 divisors (see below), whose sum is σ = 2764440. Its totient is φ = 763280.

The previous prime is 1553107. The next prime is 1553119. The reversal of 1553116 is 6113551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553119) 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 3 ways as a sum of consecutive naturals, for example, 3055 + ... + 3526.

It is an arithmetic number, because the mean of its divisors is an integer number (230370).

2^1553116 is an apocalyptic number.

It is an amenable number.

1553116 is a deficient number, since it is larger than the sum of its proper divisors (1211324).

1553116 is a wasteful number, since it uses less digits than its factorization.

1553116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6644 (or 6642 counting only the distinct ones).

The product of its digits is 450, while the sum is 22.

The square root of 1553116 is about 1246.2407472074. The cubic root of 1553116 is about 115.8069519940.

Adding to 1553116 its reverse (6113551), we get a palindrome (7666667).

The spelling of 1553116 in words is "one million, five hundred fifty-three thousand, one hundred sixteen".