51143145 has 32 divisors (see below), whose sum is σ = 87028992. Its totient is φ = 25588992.

The previous prime is 51143137. The next prime is 51143159. The reversal of 51143145 is 54134115.

It is a happy number.

It is not a de Polignac number, because 51143145 - 2³ = 51143137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16887 + ... + 19683.

It is an arithmetic number, because the mean of its divisors is an integer number (2719656).

Almost surely, 2^51143145 is an apocalyptic number.

It is an amenable number.

51143145 is a deficient number, since it is larger than the sum of its proper divisors (35885847).

51143145 is a wasteful number, since it uses less digits than its factorization.

51143145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2881.

The product of its digits is 1200, while the sum is 24.

The square root of 51143145 is about 7151.4435605687. The cubic root of 51143145 is about 371.1896091499.

The spelling of 51143145 in words is "fifty-one million, one hundred forty-three thousand, one hundred forty-five".