51743401021 has 8 divisors (see below), whose sum is σ = 55732189184. Its totient is φ = 47755830960.

The previous prime is 51743400991. The next prime is 51743401027. The reversal of 51743401021 is 12010434715.

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 51743401021 - 2⁹ = 51743400509 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 (51743401027) 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, 215325 + ... + 387106.

It is an arithmetic number, because the mean of its divisors is an integer number (6966523648).

Almost surely, 2^51743401021 is an apocalyptic number.

It is an amenable number.

51743401021 is a deficient number, since it is larger than the sum of its proper divisors (3988788163).

51743401021 is a wasteful number, since it uses less digits than its factorization.

51743401021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609051.

The product of its (nonzero) digits is 3360, while the sum is 28.

Adding to 51743401021 its reverse (12010434715), we get a palindrome (63753835736).

The spelling of 51743401021 in words is "fifty-one billion, seven hundred forty-three million, four hundred one thousand, twenty-one".