51941431 has 4 divisors (see below), whose sum is σ = 52921512. Its totient is φ = 50961352.

The previous prime is 51941423. The next prime is 51941437. The reversal of 51941431 is 13414915.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13414915 = 5 ⋅2682983.

It is a cyclic number.

It is not a de Polignac number, because 51941431 - 2³ = 51941423 is a prime.

It is a super-2 number, since 2×51941431² = 5395824508655522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51941431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51941437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489961 + ... + 490066.

It is an arithmetic number, because the mean of its divisors is an integer number (13230378).

Almost surely, 2^51941431 is an apocalyptic number.

51941431 is a deficient number, since it is larger than the sum of its proper divisors (980081).

51941431 is an equidigital number, since it uses as much as digits as its factorization.

51941431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980080.

The product of its digits is 2160, while the sum is 28.

The square root of 51941431 is about 7207.0403772977. The cubic root of 51941431 is about 373.1109287762.

The spelling of 51941431 in words is "fifty-one million, nine hundred forty-one thousand, four hundred thirty-one".