51128330 has 16 divisors (see below), whose sum is σ = 100397664. Its totient is φ = 18592080.

The previous prime is 51128327. The next prime is 51128359. The reversal of 51128330 is 3382115.

It is a super-2 number, since 2×51128330² = 5228212257177800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51128296 and 51128305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232292 + ... + 232511.

It is an arithmetic number, because the mean of its divisors is an integer number (6274854).

Almost surely, 2^51128330 is an apocalyptic number.

51128330 is a deficient number, since it is larger than the sum of its proper divisors (49269334).

51128330 is a wasteful number, since it uses less digits than its factorization.

51128330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464821.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 51128330 is about 7150.4076806851. The cubic root of 51128330 is about 371.1537639737.

The spelling of 51128330 in words is "fifty-one million, one hundred twenty-eight thousand, three hundred thirty".