51471500 has 48 divisors (see below), whose sum is σ = 113533056. Its totient is φ = 20384000.

The previous prime is 51471481. The next prime is 51471503. The reversal of 51471500 is 517415.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (51471503) 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, 56045 + ... + 56955.

It is an arithmetic number, because the mean of its divisors is an integer number (2365272).

Almost surely, 2^51471500 is an apocalyptic number.

51471500 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 51471500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56766528).

51471500 is an abundant number, since it is smaller than the sum of its proper divisors (62061556).

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

51471500 is a wasteful number, since it uses less digits than its factorization.

51471500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043 (or 1031 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 51471500 is about 7174.3640833178. The cubic root of 51471500 is about 371.9822996164.

Adding to 51471500 its reverse (517415), we get a palindrome (51988915).

The spelling of 51471500 in words is "fifty-one million, four hundred seventy-one thousand, five hundred".