51940036 has 12 divisors (see below), whose sum is σ = 92385580. Its totient is φ = 25544160.

The previous prime is 51940019. The next prime is 51940043. The reversal of 51940036 is 63004915.

It can be written as a sum of positive squares in 2 ways, for example, as 14485636 + 37454400 = 3806^2 + 6120^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51939986 and 51940013.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106191 + ... + 106678.

Almost surely, 2^51940036 is an apocalyptic number.

It is an amenable number.

51940036 is a deficient number, since it is larger than the sum of its proper divisors (40445544).

51940036 is a wasteful number, since it uses less digits than its factorization.

51940036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212934 (or 212932 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 51940036 is about 7206.9435962827. The cubic root of 51940036 is about 373.1075885114.

The spelling of 51940036 in words is "fifty-one million, nine hundred forty thousand, thirty-six".