51552405443 has 24 divisors (see below), whose sum is σ = 68864080320. Its totient is φ = 38056450320.

The previous prime is 51552405439. The next prime is 51552405449. The reversal of 51552405443 is 34450425515.

It is not a de Polignac number, because 51552405443 - 2² = 51552405439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51552405397 and 51552405406.

It is not an unprimeable number, because it can be changed into a prime (51552405449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2506721 + ... + 2527202.

It is an arithmetic number, because the mean of its divisors is an integer number (2869336680).

Almost surely, 2^51552405443 is an apocalyptic number.

51552405443 is a deficient number, since it is larger than the sum of its proper divisors (17311674877).

51552405443 is a wasteful number, since it uses less digits than its factorization.

51552405443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5033967 (or 5033960 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 38.

The spelling of 51552405443 in words is "fifty-one billion, five hundred fifty-two million, four hundred five thousand, four hundred forty-three".