51497184 has 96 divisors (see below), whose sum is σ = 143265024. Its totient is φ = 16163840.

The previous prime is 51497183. The next prime is 51497197. The reversal of 51497184 is 48179415.

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 (51497183) 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, 183124 + ... + 183404.

It is an arithmetic number, because the mean of its divisors is an integer number (1492344).

Almost surely, 2^51497184 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 51497184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71632512).

51497184 is an abundant number, since it is smaller than the sum of its proper divisors (91767840).

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

51497184 is a wasteful number, since it uses less digits than its factorization.

51497184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 392 counting only the distinct ones).

The product of its digits is 40320, while the sum is 39.

The square root of 51497184 is about 7176.1538445047. The cubic root of 51497184 is about 372.0441617129.

It can be divided in two parts, 51497 and 184, that added together give a triangular number (51681 = T₃₂₁).

The spelling of 51497184 in words is "fifty-one million, four hundred ninety-seven thousand, one hundred eighty-four".