51056005 has 48 divisors (see below), whose sum is σ = 83083392. Its totient is φ = 29088000.

The previous prime is 51056003. The next prime is 51056011. The reversal of 51056005 is 50065015.

It is not a de Polignac number, because 51056005 - 2¹ = 51056003 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51056003) 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 47 ways as a sum of consecutive naturals, for example, 505455 + ... + 505555.

It is an arithmetic number, because the mean of its divisors is an integer number (1730904).

Almost surely, 2^51056005 is an apocalyptic number.

51056005 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51056005 is a deficient number, since it is larger than the sum of its proper divisors (32027387).

51056005 is a wasteful number, since it uses less digits than its factorization.

51056005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 51056005 is about 7145.3484869529. The cubic root of 51056005 is about 370.9786727641.

The spelling of 51056005 in words is "fifty-one million, fifty-six thousand, five".