2151106 has 16 divisors (see below), whose sum is σ = 3399480. Its totient is φ = 1019520.

The previous prime is 2151101. The next prime is 2151119. The reversal of 2151106 is 6011512.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1357225 + 793881 = 1165^2 + 891^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2151106.

It is not an unprimeable number, because it can be changed into a prime (2151101) 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, 2680 + ... + 3388.

2^2151106 is an apocalyptic number.

2151106 is a deficient number, since it is larger than the sum of its proper divisors (1248374).

2151106 is a wasteful number, since it uses less digits than its factorization.

2151106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 2151106 is about 1466.6649242414. The cubic root of 2151106 is about 129.0884156402.

Adding to 2151106 its reverse (6011512), we get a palindrome (8162618).

The spelling of 2151106 in words is "two million, one hundred fifty-one thousand, one hundred six".