1551106 has 4 divisors (see below), whose sum is σ = 2326662. Its totient is φ = 775552.

The previous prime is 1551089. The next prime is 1551107. The reversal of 1551106 is 6011551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1540081 + 11025 = 1241^2 + 105^2 .

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 as a sum of consecutive naturals, namely, 387775 + ... + 387778.

2^1551106 is an apocalyptic number.

1551106 is a deficient number, since it is larger than the sum of its proper divisors (775556).

1551106 is an equidigital number, since it uses as much as digits as its factorization.

1551106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775555.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 1551106 is about 1245.4340608800. The cubic root of 1551106 is about 115.7569723699.

Adding to 1551106 its reverse (6011551), we get a palindrome (7562657).

The spelling of 1551106 in words is "one million, five hundred fifty-one thousand, one hundred six".