51129004 has 6 divisors (see below), whose sum is σ = 89475764. Its totient is φ = 25564500.

The previous prime is 51128999. The next prime is 51129007. The reversal of 51129004 is 40092115.

It is a super-2 number, since 2×51129004² = 5228350100064032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51129007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6391122 + ... + 6391129.

Almost surely, 2^51129004 is an apocalyptic number.

It is an amenable number.

51129004 is a deficient number, since it is larger than the sum of its proper divisors (38346760).

51129004 is a wasteful number, since it uses less digits than its factorization.

51129004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12782255 (or 12782253 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 51129004 is about 7150.4548107096. The cubic root of 51129004 is about 371.1553948799.

The spelling of 51129004 in words is "fifty-one million, one hundred twenty-nine thousand, four".