51522155351 has 4 divisors (see below), whose sum is σ = 51523692912. Its totient is φ = 51520617792.

The previous prime is 51522155291. The next prime is 51522155359. The reversal of 51522155351 is 15355122515.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15355122515 = 5 ⋅3071024503.

It is a cyclic number.

It is not a de Polignac number, because 51522155351 - 2⁶ = 51522155287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51522155359) 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, 717371 + ... + 785916.

It is an arithmetic number, because the mean of its divisors is an integer number (12880923228).

Almost surely, 2^51522155351 is an apocalyptic number.

51522155351 is a deficient number, since it is larger than the sum of its proper divisors (1537561).

51522155351 is a wasteful number, since it uses less digits than its factorization.

51522155351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537560.

The product of its digits is 37500, while the sum is 35.

Adding to 51522155351 its reverse (15355122515), we get a palindrome (66877277866).

The spelling of 51522155351 in words is "fifty-one billion, five hundred twenty-two million, one hundred fifty-five thousand, three hundred fifty-one".