51173472 has 96 divisors (see below), whose sum is σ = 154635264. Its totient is φ = 14515200.

The previous prime is 51173443. The next prime is 51173477. The reversal of 51173472 is 27437115.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51173477) 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, 181972 + ... + 182252.

It is an arithmetic number, because the mean of its divisors is an integer number (1610784).

Almost surely, 2^51173472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51173472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77317632).

51173472 is an abundant number, since it is smaller than the sum of its proper divisors (103461792).

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

51173472 is a wasteful number, since it uses less digits than its factorization.

51173472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 564 counting only the distinct ones).

The product of its digits is 5880, while the sum is 30.

The square root of 51173472 is about 7153.5635874716. The cubic root of 51173472 is about 371.2629643241.

The spelling of 51173472 in words is "fifty-one million, one hundred seventy-three thousand, four hundred seventy-two".