51052020254 has 4 divisors (see below), whose sum is σ = 76578030384. Its totient is φ = 25526010126.

The previous prime is 51052020241. The next prime is 51052020281. The reversal of 51052020254 is 45202025015.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12763005062 + ... + 12763005065.

It is an arithmetic number, because the mean of its divisors is an integer number (19144507596).

Almost surely, 2^51052020254 is an apocalyptic number.

51052020254 is a deficient number, since it is larger than the sum of its proper divisors (25526010130).

51052020254 is a wasteful number, since it uses less digits than its factorization.

51052020254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25526010129.

The product of its (nonzero) digits is 4000, while the sum is 26.

Adding to 51052020254 its reverse (45202025015), we get a palindrome (96254045269).

The spelling of 51052020254 in words is "fifty-one billion, fifty-two million, twenty thousand, two hundred fifty-four".