51342775 has 12 divisors (see below), whose sum is σ = 69453144. Its totient is φ = 37340000.

The previous prime is 51342761. The next prime is 51342787. The reversal of 51342775 is 57724315.

It is not a de Polignac number, because 51342775 - 2²⁵ = 17788343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51342775.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93076 + ... + 93625.

It is an arithmetic number, because the mean of its divisors is an integer number (5787762).

Almost surely, 2^51342775 is an apocalyptic number.

51342775 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51342775 is a deficient number, since it is larger than the sum of its proper divisors (18110369).

51342775 is a wasteful number, since it uses less digits than its factorization.

51342775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186722 (or 186717 counting only the distinct ones).

The product of its digits is 29400, while the sum is 34.

The square root of 51342775 is about 7165.3872889049. The cubic root of 51342775 is about 371.6719440846.

The spelling of 51342775 in words is "fifty-one million, three hundred forty-two thousand, seven hundred seventy-five".