51492171 has 8 divisors (see below), whose sum is σ = 68765904. Its totient is φ = 34273280.

The previous prime is 51492157. The next prime is 51492173. The reversal of 51492171 is 17129415.

51492171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51492171 - 2⁷ = 51492043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51492173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11466 + ... + 15311.

It is an arithmetic number, because the mean of its divisors is an integer number (8595738).

Almost surely, 2^51492171 is an apocalyptic number.

51492171 is a deficient number, since it is larger than the sum of its proper divisors (17273733).

51492171 is a wasteful number, since it uses less digits than its factorization.

51492171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27421.

The product of its digits is 2520, while the sum is 30.

The square root of 51492171 is about 7175.8045541946. The cubic root of 51492171 is about 372.0320890922.

The spelling of 51492171 in words is "fifty-one million, four hundred ninety-two thousand, one hundred seventy-one".