2451256 has 8 divisors (see below), whose sum is σ = 4596120. Its totient is φ = 1225624.

The previous prime is 2451233. The next prime is 2451257. The reversal of 2451256 is 6521542.

2451256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2451256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2451257) 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 as a sum of consecutive naturals, namely, 153196 + ... + 153211.

It is an arithmetic number, because the mean of its divisors is an integer number (574515).

2^2451256 is an apocalyptic number.

It is an amenable number.

2451256 is a deficient number, since it is larger than the sum of its proper divisors (2144864).

2451256 is a wasteful number, since it uses less digits than its factorization.

2451256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306413 (or 306409 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 2451256 is about 1565.6487473249. The cubic root of 2451256 is about 134.8330079687.

Adding to 2451256 its reverse (6521542), we get a palindrome (8972798).

It can be divided in two parts, 245 and 1256, that multiplied together give a triangular number (307720 = T₇₈₄).

The spelling of 2451256 in words is "two million, four hundred fifty-one thousand, two hundred fifty-six".