51520254302 has 32 divisors (see below), whose sum is σ = 85594320864. Its totient is φ = 23063040000.

The previous prime is 51520254301. The next prime is 51520254319. The reversal of 51520254302 is 20345202515.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51520254301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324302 + ... + 456302.

It is an arithmetic number, because the mean of its divisors is an integer number (2674822527).

Almost surely, 2^51520254302 is an apocalyptic number.

51520254302 is a deficient number, since it is larger than the sum of its proper divisors (34074066562).

51520254302 is a wasteful number, since it uses less digits than its factorization.

51520254302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132284.

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 51520254302 its reverse (20345202515), we get a palindrome (71865456817).

The spelling of 51520254302 in words is "fifty-one billion, five hundred twenty million, two hundred fifty-four thousand, three hundred two".