51700538 has 8 divisors (see below), whose sum is σ = 77589588. Its totient is φ = 25837344.

The previous prime is 51700487. The next prime is 51700547. The reversal of 51700538 is 83500715.

51700538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 41822089 + 9878449 = 6467^2 + 3143^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51700538.

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 3 ways as a sum of consecutive naturals, for example, 281 + ... + 10172.

Almost surely, 2^51700538 is an apocalyptic number.

51700538 is a deficient number, since it is larger than the sum of its proper divisors (25889050).

51700538 is a wasteful number, since it uses less digits than its factorization.

51700538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12928.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 51700538 is about 7190.3086164642. The cubic root of 51700538 is about 372.5332324749.

The spelling of 51700538 in words is "fifty-one million, seven hundred thousand, five hundred thirty-eight".