1000051 has 8 divisors (see below), whose sum is σ = 1102640. Its totient is φ = 901152.

The previous prime is 1000039. The next prime is 1000081. The reversal of 1000051 is 1500001.

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 1000051 - 2¹⁹ = 475763 is a prime.

It is a Duffinian number.

1000051 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 999998 and 1000043.

It is not an unprimeable number, because it can be changed into a prime (1000081) 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, 336 + ... + 1453.

It is an arithmetic number, because the mean of its divisors is an integer number (137830).

2^1000051 is an apocalyptic number.

1000051 is a deficient number, since it is larger than the sum of its proper divisors (102589).

1000051 is a wasteful number, since it uses less digits than its factorization.

1000051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845.

The product of its (nonzero) digits is 5, while the sum is 7.

The square root of 1000051 is about 1000.0254996749. The cubic root of 1000051 is about 100.0016999711.

Adding to 1000051 its reverse (1500001), we get a palindrome (2500052).

The spelling of 1000051 in words is "one million, fifty-one", and thus it is an aban number and an uban number.