1551104 has 36 divisors (see below), whose sum is σ = 3176376. Its totient is φ = 755712.

The previous prime is 1551089. The next prime is 1551107. The reversal of 1551104 is 4011551.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1551107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18647 + ... + 18729.

2^1551104 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 1551104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1588188).

1551104 is an abundant number, since it is smaller than the sum of its proper divisors (1625272).

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

1551104 is an frugal number, since it uses more digits than its factorization.

1551104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 1551104 is about 1245.4332579468. The cubic root of 1551104 is about 115.7569226174.

Adding to 1551104 its reverse (4011551), we get a palindrome (5562655).

The spelling of 1551104 in words is "one million, five hundred fifty-one thousand, one hundred four".