51734 has 4 divisors (see below), whose sum is σ = 77604. Its totient is φ = 25866.

The previous prime is 51721. The next prime is 51749. The reversal of 51734 is 43715.

It is a happy number.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12932 + ... + 12935.

It is an arithmetic number, because the mean of its divisors is an integer number (19401).

2⁵¹⁷³⁴ is an apocalyptic number.

51734 is a deficient number, since it is larger than the sum of its proper divisors (25870).

51734 is a wasteful number, since it uses less digits than its factorization.

51734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25869.

The product of its digits is 420, while the sum is 20.

The square root of 51734 is about 227.4510936443. The cubic root of 51734 is about 37.2613586369.

It can be divided in two parts, 517 and 34, that multiplied together give a triangular number (17578 = T₁₈₇).

The spelling of 51734 in words is "fifty-one thousand, seven hundred thirty-four".