2551983 has 8 divisors (see below), whose sum is σ = 3888768. Its totient is φ = 1458264.

The previous prime is 2551981. The next prime is 2551987. The reversal of 2551983 is 3891552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2551983 - 2¹ = 2551981 is a prime.

2551983 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551981) 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 7 ways as a sum of consecutive naturals, for example, 60741 + ... + 60782.

It is an arithmetic number, because the mean of its divisors is an integer number (486096).

2^2551983 is an apocalyptic number.

2551983 is a deficient number, since it is larger than the sum of its proper divisors (1336785).

2551983 is a wasteful number, since it uses less digits than its factorization.

2551983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121533.

The product of its digits is 10800, while the sum is 33.

The square root of 2551983 is about 1597.4927229881. The cubic root of 2551983 is about 136.6551256035.

The spelling of 2551983 in words is "two million, five hundred fifty-one thousand, nine hundred eighty-three".