51550435051 has 4 divisors (see below), whose sum is σ = 51554521872. Its totient is φ = 51546348232.

The previous prime is 51550435007. The next prime is 51550435063. The reversal of 51550435051 is 15053405515.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15053405515 = 5 ⋅3010681103.

It is a cyclic number.

It is not a de Polignac number, because 51550435051 - 2¹⁷ = 51550303979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51550434998 and 51550435016.

It is not an unprimeable number, because it can be changed into a prime (51550436051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2024431 + ... + 2049736.

It is an arithmetic number, because the mean of its divisors is an integer number (12888630468).

Almost surely, 2^51550435051 is an apocalyptic number.

51550435051 is a deficient number, since it is larger than the sum of its proper divisors (4086821).

51550435051 is a wasteful number, since it uses less digits than its factorization.

51550435051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086820.

The product of its (nonzero) digits is 37500, while the sum is 34.

The spelling of 51550435051 in words is "fifty-one billion, five hundred fifty million, four hundred thirty-five thousand, fifty-one".