51188437 has 6 divisors (see below), whose sum is σ = 51604854. Its totient is φ = 50773320.

The previous prime is 51188419. The next prime is 51188461. The reversal of 51188437 is 73488115.

It can be written as a sum of positive squares in only one way, i.e., 39450961 + 11737476 = 6281^2 + 3426^2 .

It is not a de Polignac number, because 51188437 - 2¹¹ = 51186389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51188396 and 51188405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51188477) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89362 + ... + 89932.

It is an arithmetic number, because the mean of its divisors is an integer number (8600809).

Almost surely, 2^51188437 is an apocalyptic number.

It is an amenable number.

51188437 is a deficient number, since it is larger than the sum of its proper divisors (416417).

51188437 is an frugal number, since it uses more digits than its factorization.

51188437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299 (or 728 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 51188437 is about 7154.6094931869. The cubic root of 51188437 is about 371.2991510992.

The spelling of 51188437 in words is "fifty-one million, one hundred eighty-eight thousand, four hundred thirty-seven".