51430135 has 4 divisors (see below), whose sum is σ = 61716168. Its totient is φ = 41144104.

The previous prime is 51430129. The next prime is 51430189. The reversal of 51430135 is 53103415.

It is a happy number.

51430135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53103415 = 5 ⋅10620683.

It is a cyclic number.

It is not a de Polignac number, because 51430135 - 2⁷ = 51430007 is a prime.

It is a super-2 number, since 2×51430135² = 5290117572236450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5143009 + ... + 5143018.

It is an arithmetic number, because the mean of its divisors is an integer number (15429042).

Almost surely, 2^51430135 is an apocalyptic number.

51430135 is a deficient number, since it is larger than the sum of its proper divisors (10286033).

51430135 is a wasteful number, since it uses less digits than its factorization.

51430135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10286032.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 51430135 is about 7171.4806699872. The cubic root of 51430135 is about 371.8826252232.

The spelling of 51430135 in words is "fifty-one million, four hundred thirty thousand, one hundred thirty-five".