51434777 has 4 divisors (see below), whose sum is σ = 53208420. Its totient is φ = 49661136.

The previous prime is 51434753. The next prime is 51434783. The reversal of 51434777 is 77743415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31685641 + 19749136 = 5629^2 + 4444^2 .

It is a cyclic number.

It is not a de Polignac number, because 51434777 - 2²⁰ = 50386201 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 51434777.

It is not an unprimeable number, because it can be changed into a prime (51434077) 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 3 ways as a sum of consecutive naturals, for example, 886778 + ... + 886835.

It is an arithmetic number, because the mean of its divisors is an integer number (13302105).

Almost surely, 2^51434777 is an apocalyptic number.

It is an amenable number.

51434777 is a deficient number, since it is larger than the sum of its proper divisors (1773643).

51434777 is a wasteful number, since it uses less digits than its factorization.

51434777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773642.

The product of its digits is 82320, while the sum is 38.

The square root of 51434777 is about 7171.8043057518. The cubic root of 51434777 is about 371.8938133928.

The spelling of 51434777 in words is "fifty-one million, four hundred thirty-four thousand, seven hundred seventy-seven".