51022004 has 24 divisors (see below), whose sum is σ = 101642688. Its totient is φ = 22183040.

The previous prime is 51022003. The next prime is 51022033. The reversal of 51022004 is 40022015.

It is a self number, because there is not a number n which added to its sum of digits gives 51022004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51022003) 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, 24197 + ... + 26220.

It is an arithmetic number, because the mean of its divisors is an integer number (4235112).

Almost surely, 2^51022004 is an apocalyptic number.

It is an amenable number.

51022004 is a deficient number, since it is larger than the sum of its proper divisors (50620684).

51022004 is a wasteful number, since it uses less digits than its factorization.

51022004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50455 (or 50453 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 51022004 is about 7142.9688505551. The cubic root of 51022004 is about 370.8963027802.

Adding to 51022004 its reverse (40022015), we get a palindrome (91044019).

The spelling of 51022004 in words is "fifty-one million, twenty-two thousand, four".