53545320 has 128 divisors (see below), whose sum is σ = 182793600. Its totient is φ = 13934592.

The previous prime is 53545313. The next prime is 53545343. The reversal of 53545320 is 2354535.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45864 + ... + 47016.

It is an arithmetic number, because the mean of its divisors is an integer number (1428075).

Almost surely, 2^53545320 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 53545320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91396800).

53545320 is an abundant number, since it is smaller than the sum of its proper divisors (129248280).

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

53545320 is a wasteful number, since it uses less digits than its factorization.

53545320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216 (or 1206 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 53545320 is about 7317.4667747794. The cubic root of 53545320 is about 376.9124699757.

Adding to 53545320 its reverse (2354535), we get a palindrome (55899855).

The spelling of 53545320 in words is "fifty-three million, five hundred forty-five thousand, three hundred twenty".