12540051 has 12 divisors (see below), whose sum is σ = 18146128. Its totient is φ = 8344944.

The previous prime is 12540049. The next prime is 12540109. The reversal of 12540051 is 15004521.

12540051 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12540051 - 2¹ = 12540049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12540041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6561 + ... + 8253.

Almost surely, 2^12540051 is an apocalyptic number.

12540051 is a deficient number, since it is larger than the sum of its proper divisors (5606077).

12540051 is a wasteful number, since it uses less digits than its factorization.

12540051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522 (or 2519 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 12540051 is about 3541.1934428946. The cubic root of 12540051 is about 232.3270444548.

Adding to 12540051 its reverse (15004521), we get a palindrome (27544572).

The spelling of 12540051 in words is "twelve million, five hundred forty thousand, fifty-one".