51758761 has 4 divisors (see below), whose sum is σ = 54803412. Its totient is φ = 48714112.

The previous prime is 51758741. The next prime is 51758767. The reversal of 51758761 is 16785715.

51758761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 22382361 + 29376400 = 4731^2 + 5420^2 .

It is not a de Polignac number, because 51758761 - 2¹¹ = 51756713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51758767) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1522300 + ... + 1522333.

It is an arithmetic number, because the mean of its divisors is an integer number (13700853).

Almost surely, 2^51758761 is an apocalyptic number.

It is an amenable number.

51758761 is a deficient number, since it is larger than the sum of its proper divisors (3044651).

51758761 is a wasteful number, since it uses less digits than its factorization.

51758761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044650.

The product of its digits is 58800, while the sum is 40.

The square root of 51758761 is about 7194.3561907929. The cubic root of 51758761 is about 372.6730238336.

The spelling of 51758761 in words is "fifty-one million, seven hundred fifty-eight thousand, seven hundred sixty-one".