51552991073 has 8 divisors (see below), whose sum is σ = 51959070240. Its totient is φ = 51147102240.

The previous prime is 51552991033. The next prime is 51552991093. The reversal of 51552991073 is 37019925515.

It is a happy number.

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 51552991073 - 2¹² = 51552986977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51552991033) 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, 523061 + ... + 613757.

It is an arithmetic number, because the mean of its divisors is an integer number (6494883780).

Almost surely, 2^51552991073 is an apocalyptic number.

It is an amenable number.

51552991073 is a deficient number, since it is larger than the sum of its proper divisors (406079167).

51552991073 is a wasteful number, since it uses less digits than its factorization.

51552991073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95167.

The product of its (nonzero) digits is 425250, while the sum is 47.

The spelling of 51552991073 in words is "fifty-one billion, five hundred fifty-two million, nine hundred ninety-one thousand, seventy-three".