51173233 has 2 divisors, whose sum is σ = 51173234. Its totient is φ = 51173232.

The previous prime is 51173231. The next prime is 51173263. The reversal of 51173233 is 33237115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49956624 + 1216609 = 7068^2 + 1103^2 .

It is a cyclic number.

It is not a de Polignac number, because 51173233 - 2¹ = 51173231 is a prime.

Together with 51173231, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 51173198 and 51173207.

It is not a weakly prime, because it can be changed into another prime (51173231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25586616 + 25586617.

It is an arithmetic number, because the mean of its divisors is an integer number (25586617).

Almost surely, 2^51173233 is an apocalyptic number.

It is an amenable number.

51173233 is a deficient number, since it is larger than the sum of its proper divisors (1).

51173233 is an equidigital number, since it uses as much as digits as its factorization.

51173233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890, while the sum is 25.

The square root of 51173233 is about 7153.5468824912. The cubic root of 51173233 is about 371.2623863424.

The spelling of 51173233 in words is "fifty-one million, one hundred seventy-three thousand, two hundred thirty-three".