1553106 has 16 divisors (see below), whose sum is σ = 3119904. Its totient is φ = 515424.

The previous prime is 1553099. The next prime is 1553107. The reversal of 1553106 is 6013551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1553107) 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, 1465 + ... + 2291.

It is an arithmetic number, because the mean of its divisors is an integer number (194994).

2^1553106 is an apocalyptic number.

1553106 is an abundant number, since it is smaller than the sum of its proper divisors (1566798).

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

1553106 is a wasteful number, since it uses less digits than its factorization.

1553106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1553106 is about 1246.2367351350. The cubic root of 1553106 is about 115.8067034459.

Adding to 1553106 its reverse (6013551), we get a palindrome (7566657).

The spelling of 1553106 in words is "one million, five hundred fifty-three thousand, one hundred six".