51165004 has 24 divisors (see below), whose sum is σ = 100832256. Its totient is φ = 22506000.

The previous prime is 51165001. The next prime is 51165013. The reversal of 51165004 is 40056115.

51165004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (51165001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17392 + ... + 20119.

It is an arithmetic number, because the mean of its divisors is an integer number (4201344).

Almost surely, 2^51165004 is an apocalyptic number.

It is an amenable number.

51165004 is a deficient number, since it is larger than the sum of its proper divisors (49667252).

51165004 is a wasteful number, since it uses less digits than its factorization.

51165004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37557 (or 37555 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 51165004 is about 7152.9716901439. The cubic root of 51165004 is about 371.2424847795.

Subtracting from 51165004 its reverse (40056115), we obtain a square (11108889 = 3333²).

The spelling of 51165004 in words is "fifty-one million, one hundred sixty-five thousand, four".