51777242 has 32 divisors (see below), whose sum is σ = 90175680. Its totient is φ = 22049280.

The previous prime is 51777233. The next prime is 51777259. The reversal of 51777242 is 24277715.

51777242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39908 + ... + 41184.

It is an arithmetic number, because the mean of its divisors is an integer number (2817990).

Almost surely, 2^51777242 is an apocalyptic number.

51777242 is a deficient number, since it is larger than the sum of its proper divisors (38398438).

51777242 is a wasteful number, since it uses less digits than its factorization.

51777242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406.

The product of its digits is 27440, while the sum is 35.

The square root of 51777242 is about 7195.6404857386. The cubic root of 51777242 is about 372.7173741391.

The spelling of 51777242 in words is "fifty-one million, seven hundred seventy-seven thousand, two hundred forty-two".