51138063 has 12 divisors (see below), whose sum is σ = 77754040. Its totient is φ = 32297616.

The previous prime is 51138013. The next prime is 51138067. The reversal of 51138063 is 36083115.

It is not a de Polignac number, because 51138063 - 2¹⁰ = 51137039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51138067) 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, 149356 + ... + 149697.

Almost surely, 2^51138063 is an apocalyptic number.

51138063 is a deficient number, since it is larger than the sum of its proper divisors (26615977).

51138063 is a wasteful number, since it uses less digits than its factorization.

51138063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299078 (or 299075 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 51138063 is about 7151.0882388627. The cubic root of 51138063 is about 371.1773139337.

The spelling of 51138063 in words is "fifty-one million, one hundred thirty-eight thousand, sixty-three".