51548172 has 48 divisors (see below), whose sum is σ = 131679072. Its totient is φ = 15598080.

The previous prime is 51548113. The next prime is 51548173. The reversal of 51548172 is 27184515.

It is a hoax number, since the sum of its digits (33) 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 (51548173) 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, 6808 + ... + 12224.

It is an arithmetic number, because the mean of its divisors is an integer number (2743314).

Almost surely, 2^51548172 is an apocalyptic number.

51548172 is a gapful number since it is divisible by the number (52) 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 51548172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65839536).

51548172 is an abundant number, since it is smaller than the sum of its proper divisors (80130900).

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

51548172 is a wasteful number, since it uses less digits than its factorization.

51548172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498 (or 5496 counting only the distinct ones).

The product of its digits is 11200, while the sum is 33.

The square root of 51548172 is about 7179.7055649936. The cubic root of 51548172 is about 372.1669097219.

The spelling of 51548172 in words is "fifty-one million, five hundred forty-eight thousand, one hundred seventy-two".