51708437 has 4 divisors (see below), whose sum is σ = 56409216. Its totient is φ = 47007660.

The previous prime is 51708383. The next prime is 51708463. The reversal of 51708437 is 73480715.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51708437 - 2¹⁰ = 51707413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51708397 and 51708406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51708467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2350373 + ... + 2350394.

It is an arithmetic number, because the mean of its divisors is an integer number (14102304).

Almost surely, 2^51708437 is an apocalyptic number.

It is an amenable number.

51708437 is a deficient number, since it is larger than the sum of its proper divisors (4700779).

51708437 is a wasteful number, since it uses less digits than its factorization.

51708437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4700778.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 51708437 is about 7190.8578764985. The cubic root of 51708437 is about 372.5522038452.

The spelling of 51708437 in words is "fifty-one million, seven hundred eight thousand, four hundred thirty-seven".