51330235 has 16 divisors (see below), whose sum is σ = 68467680. Its totient is φ = 36624640.

The previous prime is 51330199. The next prime is 51330247. The reversal of 51330235 is 53203315.

It is a happy number.

It is not a de Polignac number, because 51330235 - 2¹⁷ = 51199163 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5890 + ... + 11719.

It is an arithmetic number, because the mean of its divisors is an integer number (4279230).

Almost surely, 2^51330235 is an apocalyptic number.

51330235 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51330235 is a deficient number, since it is larger than the sum of its proper divisors (17137445).

51330235 is a wasteful number, since it uses less digits than its factorization.

51330235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17678.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 51330235 is about 7164.5121955371. The cubic root of 51330235 is about 371.6416824709.

Subtracting 51330235 from its reverse (53203315), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 51330235 in words is "fifty-one million, three hundred thirty thousand, two hundred thirty-five".