53622240 has 96 divisors (see below), whose sum is σ = 193052160. Its totient is φ = 12255744.

The previous prime is 53622227. The next prime is 53622241. The reversal of 53622240 is 4222635.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 53622240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53622241) 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, 4620 + ... + 11339.

It is an arithmetic number, because the mean of its divisors is an integer number (2010960).

Almost surely, 2^53622240 is an apocalyptic number.

It is an amenable number.

53622240 is an abundant number, since it is smaller than the sum of its proper divisors (139429920).

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

53622240 is a wasteful number, since it uses less digits than its factorization.

53622240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15984 (or 15976 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 53622240 is about 7322.7208058207. The cubic root of 53622240 is about 377.0928669147.

Adding to 53622240 its reverse (4222635), we get a palindrome (57844875).

The spelling of 53622240 in words is "fifty-three million, six hundred twenty-two thousand, two hundred forty".