51158671 has 4 divisors (see below), whose sum is σ = 51172992. Its totient is φ = 51144352.

The previous prime is 51158663. The next prime is 51158717. The reversal of 51158671 is 17685115.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 51158671 - 2³ = 51158663 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 (51158641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3090 + ... + 10576.

It is an arithmetic number, because the mean of its divisors is an integer number (12793248).

Almost surely, 2^51158671 is an apocalyptic number.

51158671 is a deficient number, since it is larger than the sum of its proper divisors (14321).

51158671 is an equidigital number, since it uses as much as digits as its factorization.

51158671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14320.

The product of its digits is 8400, while the sum is 34.

The square root of 51158671 is about 7152.5289933002. The cubic root of 51158671 is about 371.2271671764.

The spelling of 51158671 in words is "fifty-one million, one hundred fifty-eight thousand, six hundred seventy-one".