51123252000 has 96 divisors (see below), whose sum is σ = 167479812864. Its totient is φ = 13632864000.

The previous prime is 51123251999. The next prime is 51123252007. The reversal of 51123252000 is 25232115.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×51123252000² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51123252007) 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, 2118136 + ... + 2142135.

It is an arithmetic number, because the mean of its divisors is an integer number (1744581384).

Almost surely, 2^51123252000 is an apocalyptic number.

51123252000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51123252000 is an abundant number, since it is smaller than the sum of its proper divisors (116356560864).

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

51123252000 is a wasteful number, since it uses less digits than its factorization.

51123252000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4260299 (or 4260281 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 51123252000 its reverse (25232115), we get a palindrome (51148484115).

The spelling of 51123252000 in words is "fifty-one billion, one hundred twenty-three million, two hundred fifty-two thousand".