51102454500 has 120 divisors (see below), whose sum is σ = 166722836280. Its totient is φ = 13627310400.

The previous prime is 51102454499. The next prime is 51102454519. The reversal of 51102454500 is 545420115.

51102454500 is a `hidden beast` number, since 5 + 1 + 102 + 4 + 54 + 500 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12692726244 + 38409728256 = 112662^2 + 195984^2 .

It is a super-2 number, since 2×51102454500² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 590395 + ... + 671394.

It is an arithmetic number, because the mean of its divisors is an integer number (1389356969).

Almost surely, 2^51102454500 is an apocalyptic number.

51102454500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51102454500 is an abundant number, since it is smaller than the sum of its proper divisors (115620381780).

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

51102454500 is a wasteful number, since it uses less digits than its factorization.

51102454500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261820 (or 1261799 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 51102454500 its reverse (545420115), we get a palindrome (51647874615).

The spelling of 51102454500 in words is "fifty-one billion, one hundred two million, four hundred fifty-four thousand, five hundred".