51513224152 has 32 divisors (see below), whose sum is σ = 110135743200. Its totient is φ = 22376784384.

The previous prime is 51513224143. The next prime is 51513224153. The reversal of 51513224152 is 25142231515.

It is a super-2 number, since 2×51513224152² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51513224153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14566452 + ... + 14569987.

It is an arithmetic number, because the mean of its divisors is an integer number (3441741975).

Almost surely, 2^51513224152 is an apocalyptic number.

51513224152 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51513224152 is an abundant number, since it is smaller than the sum of its proper divisors (58622519048).

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

51513224152 is a wasteful number, since it uses less digits than its factorization.

51513224152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29136475 (or 29136471 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

Adding to 51513224152 its reverse (25142231515), we get a palindrome (76655455667).

The spelling of 51513224152 in words is "fifty-one billion, five hundred thirteen million, two hundred twenty-four thousand, one hundred fifty-two".