2551473 has 16 divisors (see below), whose sum is σ = 3853440. Its totient is φ = 1667952.

The previous prime is 2551469. The next prime is 2551481. The reversal of 2551473 is 3741552.

It is a happy number.

It is not a de Polignac number, because 2551473 - 2² = 2551469 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

2551473 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2551403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 540 + ... + 2322.

It is an arithmetic number, because the mean of its divisors is an integer number (240840).

2^2551473 is an apocalyptic number.

It is an amenable number.

2551473 is a deficient number, since it is larger than the sum of its proper divisors (1301967).

2551473 is a wasteful number, since it uses less digits than its factorization.

2551473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845 (or 1839 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 2551473 is about 1597.3330898720. Note that the first 3 decimals coincide. The cubic root of 2551473 is about 136.6460217345.

It can be divided in two parts, 255 and 1473, that added together give a cube (1728 = 12³).

The spelling of 2551473 in words is "two million, five hundred fifty-one thousand, four hundred seventy-three".