52445420 has 24 divisors (see below), whose sum is σ = 112480704. Its totient is φ = 20531456.

The previous prime is 52445411. The next prime is 52445429. The reversal of 52445420 is 2454425.

It is an interprime number because it is at equal distance from previous prime (52445411) and next prime (52445429).

It is a self number, because there is not a number n which added to its sum of digits gives 52445420.

It is not an unprimeable number, because it can be changed into a prime (52445429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26957 + ... + 28836.

It is an arithmetic number, because the mean of its divisors is an integer number (4686696).

Almost surely, 2^52445420 is an apocalyptic number.

It is an amenable number.

52445420 is an abundant number, since it is smaller than the sum of its proper divisors (60035284).

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

52445420 is a wasteful number, since it uses less digits than its factorization.

52445420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55849 (or 55847 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 52445420 is about 7241.9210158631. The cubic root of 52445420 is about 374.3138147951.

Adding to 52445420 its reverse (2454425), we get a palindrome (54899845).

The spelling of 52445420 in words is "fifty-two million, four hundred forty-five thousand, four hundred twenty".