51020425254 has 32 divisors (see below), whose sum is σ = 103856852736. Its totient is φ = 16704911520.

The previous prime is 51020425243. The next prime is 51020425259. The reversal of 51020425254 is 45252402015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51020425259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170209 + ... + 361955.

It is an arithmetic number, because the mean of its divisors is an integer number (3245526648).

Almost surely, 2^51020425254 is an apocalyptic number.

51020425254 is an abundant number, since it is smaller than the sum of its proper divisors (52836427482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51020425254 is a wasteful number, since it uses less digits than its factorization.

51020425254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192540.

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 51020425254 its reverse (45252402015), we get a palindrome (96272827269).

The spelling of 51020425254 in words is "fifty-one billion, twenty million, four hundred twenty-five thousand, two hundred fifty-four".