51552 has 36 divisors (see below), whose sum is σ = 147420. Its totient is φ = 17088.

The previous prime is 51551. The next prime is 51563. The reversal of 51552 is 25515.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 9 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 199 + ... + 377.

It is an arithmetic number, because the mean of its divisors is an integer number (4095).

2⁵¹⁵⁵² 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 51552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73710).

51552 is an abundant number, since it is smaller than the sum of its proper divisors (95868).

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

51552 is a wasteful number, since it uses less digits than its factorization.

51552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 184 counting only the distinct ones).

The product of its digits is 250, while the sum is 18.

The square root of 51552 is about 227.0506551411. The cubic root of 51552 is about 37.2176121944.

The spelling of 51552 in words is "fifty-one thousand, five hundred fifty-two".