51429775 has 12 divisors (see below), whose sum is σ = 65831104. Its totient is φ = 39816000.

The previous prime is 51429767. The next prime is 51429779. The reversal of 51429775 is 57792415.

It is not a de Polignac number, because 51429775 - 2³ = 51429767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51429779) 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 11 ways as a sum of consecutive naturals, for example, 32406 + ... + 33955.

Almost surely, 2^51429775 is an apocalyptic number.

51429775 is a deficient number, since it is larger than the sum of its proper divisors (14401329).

51429775 is a wasteful number, since it uses less digits than its factorization.

51429775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66402 (or 66397 counting only the distinct ones).

The product of its digits is 88200, while the sum is 40.

The square root of 51429775 is about 7171.4555705240. The cubic root of 51429775 is about 371.8817575214.

The spelling of 51429775 in words is "fifty-one million, four hundred twenty-nine thousand, seven hundred seventy-five".