52447320 has 48 divisors (see below), whose sum is σ = 170454960. Its totient is φ = 13985856.

The previous prime is 52447313. The next prime is 52447327. The reversal of 52447320 is 2374425.

It is an interprime number because it is at equal distance from previous prime (52447313) and next prime (52447327).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52447327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72484 + ... + 73203.

It is an arithmetic number, because the mean of its divisors is an integer number (3551145).

Almost surely, 2^52447320 is an apocalyptic number.

It is an amenable number.

52447320 is an abundant number, since it is smaller than the sum of its proper divisors (118007640).

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

52447320 is a wasteful number, since it uses less digits than its factorization.

52447320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145704 (or 145697 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 52447320 is about 7242.0521953380. The cubic root of 52447320 is about 374.3183349716.

The spelling of 52447320 in words is "fifty-two million, four hundred forty-seven thousand, three hundred twenty".