51388036 has 24 divisors (see below), whose sum is σ = 103360320. Its totient is φ = 21898272.

The previous prime is 51388031. The next prime is 51388037. The reversal of 51388036 is 63088315.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51387992 and 51388010.

It is not an unprimeable number, because it can be changed into a prime (51388031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115 + ... + 10138.

It is an arithmetic number, because the mean of its divisors is an integer number (4306680).

Almost surely, 2^51388036 is an apocalyptic number.

It is an amenable number.

51388036 is an abundant number, since it is smaller than the sum of its proper divisors (51972284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51388036 is a wasteful number, since it uses less digits than its factorization.

51388036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10443 (or 10441 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 51388036 is about 7168.5449011637. The cubic root of 51388036 is about 371.7811272695.

The spelling of 51388036 in words is "fifty-one million, three hundred eighty-eight thousand, thirty-six".