51245021352 has 32 divisors (see below), whose sum is σ = 146414347200. Its totient is φ = 14641434624.

The previous prime is 51245021351. The next prime is 51245021363. The reversal of 51245021352 is 25312054215.

It is not an unprimeable number, because it can be changed into a prime (51245021351) 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, 152514777 + ... + 152515112.

It is an arithmetic number, because the mean of its divisors is an integer number (4575448350).

Almost surely, 2^51245021352 is an apocalyptic number.

It is an amenable number.

51245021352 is an abundant number, since it is smaller than the sum of its proper divisors (95169325848).

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

51245021352 is a wasteful number, since it uses less digits than its factorization.

51245021352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305029905 (or 305029901 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 51245021352 its reverse (25312054215), we get a palindrome (76557075567).

The spelling of 51245021352 in words is "fifty-one billion, two hundred forty-five million, twenty-one thousand, three hundred fifty-two".