2651506 has 32 divisors (see below), whose sum is σ = 4773888. Its totient is φ = 1088640.

The previous prime is 2651503. The next prime is 2651513. The reversal of 2651506 is 6051562.

2651506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20815 + ... + 20941.

It is an arithmetic number, because the mean of its divisors is an integer number (149184).

2^2651506 is an apocalyptic number.

2651506 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2651506 is a deficient number, since it is larger than the sum of its proper divisors (2122382).

2651506 is a wasteful number, since it uses less digits than its factorization.

2651506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2651506 is about 1628.3445581326. The cubic root of 2651506 is about 138.4089597928.

It can be divided in two parts, 265 and 1506, that added together give a palindrome (1771).

The spelling of 2651506 in words is "two million, six hundred fifty-one thousand, five hundred six".