51135233 has 8 divisors (see below), whose sum is σ = 53682048. Its totient is φ = 48615424.

The previous prime is 51135223. The next prime is 51135247. The reversal of 51135233 is 33253115.

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

It is a cyclic number.

It is not a de Polignac number, because 51135233 - 2⁶ = 51135169 is a prime.

It is a super-2 number, since 2×51135233² = 5229624107928578, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51135199 and 51135208.

It is not an unprimeable number, because it can be changed into a prime (51135223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2816 + ... + 10497.

It is an arithmetic number, because the mean of its divisors is an integer number (6710256).

Almost surely, 2^51135233 is an apocalyptic number.

It is an amenable number.

51135233 is a deficient number, since it is larger than the sum of its proper divisors (2546815).

51135233 is a wasteful number, since it uses less digits than its factorization.

51135233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13503.

The product of its digits is 1350, while the sum is 23.

The square root of 51135233 is about 7150.8903641435. The cubic root of 51135233 is about 371.1704667758.

Adding to 51135233 its reverse (33253115), we get a palindrome (84388348).

The spelling of 51135233 in words is "fifty-one million, one hundred thirty-five thousand, two hundred thirty-three".