52745472 has 144 divisors (see below), whose sum is σ = 168262080. Its totient is φ = 16201728.

The previous prime is 52745471. The next prime is 52745503. The reversal of 52745472 is 27454725.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52745471) 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, 89563 + ... + 90149.

Almost surely, 2^52745472 is an apocalyptic number.

52745472 is a gapful number since it is divisible by the number (52) 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 52745472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84131040).

52745472 is an abundant number, since it is smaller than the sum of its proper divisors (115516608).

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

52745472 is a wasteful number, since it uses less digits than its factorization.

52745472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 605 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 52745472 is about 7262.6077961019. The cubic root of 52745472 is about 375.0263021551.

The spelling of 52745472 in words is "fifty-two million, seven hundred forty-five thousand, four hundred seventy-two".