51143345 has 32 divisors (see below), whose sum is σ = 71280000. Its totient is φ = 34836480.

The previous prime is 51143291. The next prime is 51143353. The reversal of 51143345 is 54334115.

It is not a de Polignac number, because 51143345 - 2¹⁴ = 51126961 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113681 + ... + 114129.

It is an arithmetic number, because the mean of its divisors is an integer number (2227500).

Almost surely, 2^51143345 is an apocalyptic number.

51143345 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51143345 is a deficient number, since it is larger than the sum of its proper divisors (20136655).

51143345 is a wasteful number, since it uses less digits than its factorization.

51143345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593.

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

The square root of 51143345 is about 7151.4575437459. The cubic root of 51143345 is about 371.1900930064.

The spelling of 51143345 in words is "fifty-one million, one hundred forty-three thousand, three hundred forty-five".