51258167 has 4 divisors (see below), whose sum is σ = 53025720. Its totient is φ = 49490616.

The previous prime is 51258161. The next prime is 51258169. The reversal of 51258167 is 76185215.

51258167 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76185215 = 5 ⋅15237043.

It is a cyclic number.

It is not a de Polignac number, because 51258167 - 2¹⁴ = 51241783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51258161) 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 3 ways as a sum of consecutive naturals, for example, 883733 + ... + 883790.

It is an arithmetic number, because the mean of its divisors is an integer number (13256430).

Almost surely, 2^51258167 is an apocalyptic number.

51258167 is a deficient number, since it is larger than the sum of its proper divisors (1767553).

51258167 is a wasteful number, since it uses less digits than its factorization.

51258167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767552.

The product of its digits is 16800, while the sum is 35.

The square root of 51258167 is about 7159.4809169380. The cubic root of 51258167 is about 371.4676718558.

The spelling of 51258167 in words is "fifty-one million, two hundred fifty-eight thousand, one hundred sixty-seven".