51355323 has 8 divisors (see below), whose sum is σ = 76082000. Its totient is φ = 34236864.

The previous prime is 51355319. The next prime is 51355331. The reversal of 51355323 is 32355315.

It is not a de Polignac number, because 51355323 - 2² = 51355319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1902049 = 51355323 / (5 + 1 + 3 + 5 + 5 + 3 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51355363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 950998 + ... + 951051.

It is an arithmetic number, because the mean of its divisors is an integer number (9510250).

Almost surely, 2^51355323 is an apocalyptic number.

51355323 is a deficient number, since it is larger than the sum of its proper divisors (24726677).

51355323 is a wasteful number, since it uses less digits than its factorization.

51355323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902058 (or 1902052 counting only the distinct ones).

The product of its digits is 6750, while the sum is 27.

The square root of 51355323 is about 7166.2628335835. The cubic root of 51355323 is about 371.7022200723.

The spelling of 51355323 in words is "fifty-one million, three hundred fifty-five thousand, three hundred twenty-three".