53556620 has 48 divisors (see below), whose sum is σ = 125314560. Its totient is φ = 19090176.

The previous prime is 53556593. The next prime is 53556631. The reversal of 53556620 is 2665535.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3989 + ... + 11091.

It is an arithmetic number, because the mean of its divisors is an integer number (2610720).

Almost surely, 2^53556620 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 53556620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62657280).

53556620 is an abundant number, since it is smaller than the sum of its proper divisors (71757940).

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

53556620 is a wasteful number, since it uses less digits than its factorization.

53556620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7154 (or 7152 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 53556620 is about 7318.2388591792. The cubic root of 53556620 is about 376.9389821672.

The spelling of 53556620 in words is "fifty-three million, five hundred fifty-six thousand, six hundred twenty".