51272544 has 96 divisors (see below), whose sum is σ = 144516960. Its totient is φ = 15859712.

The previous prime is 51272537. The next prime is 51272563. The reversal of 51272544 is 44527215.

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

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, 145072 + ... + 145424.

It is an arithmetic number, because the mean of its divisors is an integer number (1505385).

Almost surely, 2^51272544 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 51272544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72258480).

51272544 is an abundant number, since it is smaller than the sum of its proper divisors (93244416).

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

51272544 is a wasteful number, since it uses less digits than its factorization.

51272544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 464 counting only the distinct ones).

The product of its digits is 11200, while the sum is 30.

The square root of 51272544 is about 7160.4848997816. The cubic root of 51272544 is about 371.5023986242.

Adding to 51272544 its reverse (44527215), we get a palindrome (95799759).

The spelling of 51272544 in words is "fifty-one million, two hundred seventy-two thousand, five hundred forty-four".