51128434 has 8 divisors (see below), whose sum is σ = 87648768. Its totient is φ = 21912180.

The previous prime is 51128381. The next prime is 51128447. The reversal of 51128434 is 43482115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51128434² = 5228233526584712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1826002 + ... + 1826029.

It is an arithmetic number, because the mean of its divisors is an integer number (10956096).

Almost surely, 2^51128434 is an apocalyptic number.

51128434 is a deficient number, since it is larger than the sum of its proper divisors (36520334).

51128434 is a wasteful number, since it uses less digits than its factorization.

51128434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3652040.

The product of its digits is 3840, while the sum is 28.

The square root of 51128434 is about 7150.4149529940. The cubic root of 51128434 is about 371.1540156278.

The spelling of 51128434 in words is "fifty-one million, one hundred twenty-eight thousand, four hundred thirty-four".