2156612 has 6 divisors (see below), whose sum is σ = 3774078. Its totient is φ = 1078304.

The previous prime is 2156599. The next prime is 2156617. The reversal of 2156612 is 2166512.

It can be written as a sum of positive squares in only one way, i.e., 1976836 + 179776 = 1406^2 + 424^2 .

It is not an unprimeable number, because it can be changed into a prime (2156617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269573 + ... + 269580.

It is an arithmetic number, because the mean of its divisors is an integer number (629013).

2^2156612 is an apocalyptic number.

It is an amenable number.

2156612 is a deficient number, since it is larger than the sum of its proper divisors (1617466).

2156612 is a wasteful number, since it uses less digits than its factorization.

2156612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539157 (or 539155 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 2156612 is about 1468.5407723315. The cubic root of 2156612 is about 129.1984606206.

The spelling of 2156612 in words is "two million, one hundred fifty-six thousand, six hundred twelve".