51520453022 has 4 divisors (see below), whose sum is σ = 77280679536. Its totient is φ = 25760226510.

The previous prime is 51520453009. The next prime is 51520453043. The reversal of 51520453022 is 22035402515.

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, 12880113254 + ... + 12880113257.

It is an arithmetic number, because the mean of its divisors is an integer number (19320169884).

Almost surely, 2^51520453022 is an apocalyptic number.

51520453022 is a deficient number, since it is larger than the sum of its proper divisors (25760226514).

51520453022 is a wasteful number, since it uses less digits than its factorization.

51520453022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25760226513.

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

Adding to 51520453022 its reverse (22035402515), we get a palindrome (73555855537).

The spelling of 51520453022 in words is "fifty-one billion, five hundred twenty million, four hundred fifty-three thousand, twenty-two".