51167121 has 8 divisors (see below), whose sum is σ = 68329920. Its totient is φ = 34057872.

The previous prime is 51167117. The next prime is 51167131. The reversal of 51167121 is 12176115.

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

It is not a de Polignac number, because 51167121 - 2² = 51167117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51167091 and 51167100.

It is not an unprimeable number, because it can be changed into a prime (51167131) 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, 11101 + ... + 15018.

It is an arithmetic number, because the mean of its divisors is an integer number (8541240).

Almost surely, 2^51167121 is an apocalyptic number.

It is an amenable number.

51167121 is a deficient number, since it is larger than the sum of its proper divisors (17162799).

51167121 is a wasteful number, since it uses less digits than its factorization.

51167121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26775.

The product of its digits is 420, while the sum is 24.

The square root of 51167121 is about 7153.1196690675. The cubic root of 51167121 is about 371.2476048775.

The spelling of 51167121 in words is "fifty-one million, one hundred sixty-seven thousand, one hundred twenty-one".