51266143 has 4 divisors (see below), whose sum is σ = 52356960. Its totient is φ = 50175328.

The previous prime is 51266141. The next prime is 51266147. The reversal of 51266143 is 34166215.

51266143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34166215 = 5 ⋅6833243.

It is a cyclic number.

It is not a de Polignac number, because 51266143 - 2¹ = 51266141 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 (51266141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545338 + ... + 545431.

It is an arithmetic number, because the mean of its divisors is an integer number (13089240).

Almost surely, 2^51266143 is an apocalyptic number.

51266143 is a deficient number, since it is larger than the sum of its proper divisors (1090817).

51266143 is a wasteful number, since it uses less digits than its factorization.

51266143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090816.

The product of its digits is 4320, while the sum is 28.

The square root of 51266143 is about 7160.0379188940. The cubic root of 51266143 is about 371.4869382002.

The spelling of 51266143 in words is "fifty-one million, two hundred sixty-six thousand, one hundred forty-three".