51462500 has 72 divisors (see below), whose sum is σ = 118117440. Its totient is φ = 19580000.

The previous prime is 51462491. The next prime is 51462527. The reversal of 51462500 is 526415.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 287411 + ... + 287589.

It is an arithmetic number, because the mean of its divisors is an integer number (1640520).

Almost surely, 2^51462500 is an apocalyptic number.

51462500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51462500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59058720).

51462500 is an abundant number, since it is smaller than the sum of its proper divisors (66654940).

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

51462500 is a wasteful number, since it uses less digits than its factorization.

51462500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 51462500 is about 7173.7368226051. The cubic root of 51462500 is about 371.9606174827.

Adding to 51462500 its reverse (526415), we get a palindrome (51988915).

The spelling of 51462500 in words is "fifty-one million, four hundred sixty-two thousand, five hundred".