51143445 has 24 divisors (see below), whose sum is σ = 89977056. Its totient is φ = 26867808.

The previous prime is 51143431. The next prime is 51143447. The reversal of 51143445 is 54434115.

It is a happy number.

It is not a de Polignac number, because 51143445 - 2⁵ = 51143413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51143447) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 5467 + ... + 11496.

It is an arithmetic number, because the mean of its divisors is an integer number (3749044).

Almost surely, 2^51143445 is an apocalyptic number.

It is an amenable number.

51143445 is a deficient number, since it is larger than the sum of its proper divisors (38833611).

51143445 is a wasteful number, since it uses less digits than its factorization.

51143445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17041 (or 17038 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 51143445 is about 7151.4645353242. The cubic root of 51143445 is about 371.1903349342.

It can be divided in two parts, 511 and 43445, that added together give a triangular number (43956 = T₂₉₆).

The spelling of 51143445 in words is "fifty-one million, one hundred forty-three thousand, four hundred forty-five".