51343145 has 16 divisors (see below), whose sum is σ = 74556288. Its totient is φ = 33135360.

The previous prime is 51343139. The next prime is 51343169. The reversal of 51343145 is 54134315.

It is not a de Polignac number, because 51343145 - 2⁶ = 51343081 is a prime.

It is a super-3 number, since 3×51343145³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42551 + ... + 43740.

It is an arithmetic number, because the mean of its divisors is an integer number (4659768).

Almost surely, 2^51343145 is an apocalyptic number.

It is an amenable number.

51343145 is a deficient number, since it is larger than the sum of its proper divisors (23213143).

51343145 is a wasteful number, since it uses less digits than its factorization.

51343145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86320.

The product of its digits is 3600, while the sum is 26.

The square root of 51343145 is about 7165.4131074210. The cubic root of 51343145 is about 371.6728368963.

The spelling of 51343145 in words is "fifty-one million, three hundred forty-three thousand, one hundred forty-five".