51473500 has 48 divisors (see below), whose sum is σ = 121080960. Its totient is φ = 19003200.

The previous prime is 51473483. The next prime is 51473533. The reversal of 51473500 is 537415.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2541 + ... + 10459.

It is an arithmetic number, because the mean of its divisors is an integer number (2522520).

Almost surely, 2^51473500 is an apocalyptic number.

51473500 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 51473500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60540480).

51473500 is an abundant number, since it is smaller than the sum of its proper divisors (69607460).

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

51473500 is a wasteful number, since it uses less digits than its factorization.

51473500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7951 (or 7939 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 51473500 is about 7174.5034671397. The cubic root of 51473500 is about 371.9871175251.

The spelling of 51473500 in words is "fifty-one million, four hundred seventy-three thousand, five hundred".