51343669 has 8 divisors (see below), whose sum is σ = 55351520. Its totient is φ = 47344176.

The previous prime is 51343651. The next prime is 51343711. The reversal of 51343669 is 96634315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51343669 - 2⁵ = 51343637 is a prime.

It is a super-2 number, since 2×51343669² = 5272344692763122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51343609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17614 + ... + 20320.

It is an arithmetic number, because the mean of its divisors is an integer number (6918940).

Almost surely, 2^51343669 is an apocalyptic number.

It is an amenable number.

51343669 is a deficient number, since it is larger than the sum of its proper divisors (4007851).

51343669 is a wasteful number, since it uses less digits than its factorization.

51343669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4179.

The product of its digits is 58320, while the sum is 37.

The square root of 51343669 is about 7165.4496718629. The cubic root of 51343669 is about 371.6741013034.

The spelling of 51343669 in words is "fifty-one million, three hundred forty-three thousand, six hundred sixty-nine".