51020520343 has 8 divisors (see below), whose sum is σ = 58177245168. Its totient is φ = 44325519744.

The previous prime is 51020520337. The next prime is 51020520379. The reversal of 51020520343 is 34302502015.

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 51020520343 - 2⁵ = 51020520311 is a prime.

It is a super-3 number, since 3×51020520343³ (a number of 33 digits) contains 333 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 (51020520443) 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, 115430821 + ... + 115431262.

It is an arithmetic number, because the mean of its divisors is an integer number (7272155646).

Almost surely, 2^51020520343 is an apocalyptic number.

51020520343 is a deficient number, since it is larger than the sum of its proper divisors (7156724825).

51020520343 is a wasteful number, since it uses less digits than its factorization.

51020520343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230862113.

The product of its (nonzero) digits is 3600, while the sum is 25.

The spelling of 51020520343 in words is "fifty-one billion, twenty million, five hundred twenty thousand, three hundred forty-three".