51520475293 has 8 divisors (see below), whose sum is σ = 58922343360. Its totient is φ = 44129057280.

The previous prime is 51520475291. The next prime is 51520475317. The reversal of 51520475293 is 39257402515.

It is a happy number.

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

It is not a de Polignac number, because 51520475293 - 2¹ = 51520475291 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 (51520475291) 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, 2601943 + ... + 2621668.

It is an arithmetic number, because the mean of its divisors is an integer number (7365292920).

Almost surely, 2^51520475293 is an apocalyptic number.

It is an amenable number.

51520475293 is a deficient number, since it is larger than the sum of its proper divisors (7401868067).

51520475293 is a wasteful number, since it uses less digits than its factorization.

51520475293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5225027.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 51520475293 in words is "fifty-one billion, five hundred twenty million, four hundred seventy-five thousand, two hundred ninety-three".