51233161 has 16 divisors (see below), whose sum is σ = 59875200. Its totient is φ = 42933888.

The previous prime is 51233153. The next prime is 51233209. The reversal of 51233161 is 16133215.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51233161 - 2³ = 51233153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51233261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62925 + ... + 63733.

It is an arithmetic number, because the mean of its divisors is an integer number (3742200).

Almost surely, 2^51233161 is an apocalyptic number.

It is an amenable number.

51233161 is a deficient number, since it is larger than the sum of its proper divisors (8642039).

51233161 is a wasteful number, since it uses less digits than its factorization.

51233161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008.

The product of its digits is 540, while the sum is 22.

The square root of 51233161 is about 7157.7343482418. The cubic root of 51233161 is about 371.4072559126.

Adding to 51233161 its reverse (16133215), we get a palindrome (67366376).

The spelling of 51233161 in words is "fifty-one million, two hundred thirty-three thousand, one hundred sixty-one".