52221456 has 120 divisors (see below), whose sum is σ = 174438240. Its totient is φ = 14914368.

The previous prime is 52221409. The next prime is 52221461. The reversal of 52221456 is 65412225.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19935 + ... + 22401.

It is an arithmetic number, because the mean of its divisors is an integer number (1453652).

Almost surely, 2^52221456 is an apocalyptic number.

52221456 is a gapful number since it is divisible by the number (56) 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 52221456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87219120).

52221456 is an abundant number, since it is smaller than the sum of its proper divisors (122216784).

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

52221456 is a wasteful number, since it uses less digits than its factorization.

52221456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498 (or 2479 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 52221456 is about 7226.4414479050. The cubic root of 52221456 is about 373.7802287232.

The spelling of 52221456 in words is "fifty-two million, two hundred twenty-one thousand, four hundred fifty-six".