51313671 has 24 divisors (see below), whose sum is σ = 76121136. Its totient is φ = 33298560.

The previous prime is 51313643. The next prime is 51313697. The reversal of 51313671 is 17631315.

51313671 = T₁₁₄₉ + T₁₁₅₀ + ... + T₁₂₂₁.

It is not a de Polignac number, because 51313671 - 2⁹ = 51313159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51313601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54061 + ... + 55001.

It is an arithmetic number, because the mean of its divisors is an integer number (3171714).

Almost surely, 2^51313671 is an apocalyptic number.

51313671 is a deficient number, since it is larger than the sum of its proper divisors (24807465).

51313671 is a wasteful number, since it uses less digits than its factorization.

51313671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103 (or 1100 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 51313671 is about 7163.3561268445. The cubic root of 51313671 is about 371.6017025571.

Adding to 51313671 its reverse (17631315), we get a palindrome (68944986).

It can be divided in two parts, 51313 and 671, that added together give a square (51984 = 228²).

The spelling of 51313671 in words is "fifty-one million, three hundred thirteen thousand, six hundred seventy-one".