4000051 has 8 divisors (see below), whose sum is σ = 4593600. Its totient is φ = 3444840.

The previous prime is 4000043. The next prime is 4000063. The reversal of 4000051 is 1500004.

4000051 = 814² + 815² + ... + 819².

4000051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 4000051 - 2³ = 4000043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4000081) 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 7 ways as a sum of consecutive naturals, for example, 9361 + ... + 9778.

It is an arithmetic number, because the mean of its divisors is an integer number (574200).

Almost surely, 2^4000051 is an apocalyptic number.

4000051 is a deficient number, since it is larger than the sum of its proper divisors (593549).

4000051 is a wasteful number, since it uses less digits than its factorization.

4000051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19169.

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 4000051 is about 2000.0127499594. The cubic root of 4000051 is about 158.7407798394.

Adding to 4000051 its reverse (1500004), we get a palindrome (5500055).

The spelling of 4000051 in words is "four million, fifty-one", and thus it is an aban number.