51613460252 has 48 divisors (see below), whose sum is σ = 95503188480. Its totient is φ = 24339268800.

The previous prime is 51613460221. The next prime is 51613460257. The reversal of 51613460252 is 25206431615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51613460257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19037177 + ... + 19039887.

It is an arithmetic number, because the mean of its divisors is an integer number (1989649760).

Almost surely, 2^51613460252 is an apocalyptic number.

It is an amenable number.

51613460252 is a deficient number, since it is larger than the sum of its proper divisors (43889728228).

51613460252 is a wasteful number, since it uses less digits than its factorization.

51613460252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3762 (or 3760 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 51613460252 its reverse (25206431615), we get a palindrome (76819891867).

The spelling of 51613460252 in words is "fifty-one billion, six hundred thirteen million, four hundred sixty thousand, two hundred fifty-two".