2155526 has 4 divisors (see below), whose sum is σ = 3233292. Its totient is φ = 1077762.

The previous prime is 2155519. The next prime is 2155579. The reversal of 2155526 is 6255512.

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

It is a junction number, because it is equal to n+sod(n) for n = 2155495 and 2155504.

It is a congruent number.

It is an unprimeable number.

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, 538880 + ... + 538883.

It is an arithmetic number, because the mean of its divisors is an integer number (808323).

2^2155526 is an apocalyptic number.

2155526 is a deficient number, since it is larger than the sum of its proper divisors (1077766).

2155526 is a wasteful number, since it uses less digits than its factorization.

2155526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077765.

The product of its digits is 3000, while the sum is 26.

The square root of 2155526 is about 1468.1709709703. The cubic root of 2155526 is about 129.1767702583.

The spelling of 2155526 in words is "two million, one hundred fifty-five thousand, five hundred twenty-six".