12000051 has 18 divisors (see below), whose sum is σ = 20164092. Its totient is φ = 6856920.

The previous prime is 12000029. The next prime is 12000073. The reversal of 12000051 is 15000021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12000029) and next prime (12000073).

It is not a de Polignac number, because 12000051 - 2⁶ = 11999987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11999997 and 12000042.

It is not an unprimeable number, because it can be changed into a prime (12000091) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13165 + ... + 14046.

Almost surely, 2^12000051 is an apocalyptic number.

12000051 is a deficient number, since it is larger than the sum of its proper divisors (8164041).

12000051 is a wasteful number, since it uses less digits than its factorization.

12000051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27231 (or 27221 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 12000051 is about 3464.1089763459. The cubic root of 12000051 is about 228.9431728459.

Adding to 12000051 its reverse (15000021), we get a palindrome (27000072).

The spelling of 12000051 in words is "twelve million, fifty-one", and thus it is an aban number and an uban number.