51631941 has 16 divisors (see below), whose sum is σ = 76063104. Its totient is φ = 30987264.

The previous prime is 51631901. The next prime is 51631961. The reversal of 51631941 is 14913615.

It is not a de Polignac number, because 51631941 - 2¹⁸ = 51369797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51631899 and 51631908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51631901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20836 + ... + 23181.

It is an arithmetic number, because the mean of its divisors is an integer number (4753944).

Almost surely, 2^51631941 is an apocalyptic number.

51631941 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

51631941 is a deficient number, since it is larger than the sum of its proper divisors (24431163).

51631941 is a wasteful number, since it uses less digits than its factorization.

51631941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44060.

The product of its digits is 3240, while the sum is 30.

The square root of 51631941 is about 7185.5369319210. The cubic root of 51631941 is about 372.3683987771.

The spelling of 51631941 in words is "fifty-one million, six hundred thirty-one thousand, nine hundred forty-one".