53555472 has 80 divisors (see below), whose sum is σ = 154930560. Its totient is φ = 17712000.

The previous prime is 53555461. The next prime is 53555473. The reversal of 53555472 is 27455535.

53555472 is a `hidden beast` number, since 5 + 35 + 554 + 72 = 666.

It is a super-2 number, since 2×53555472² = 5736377162285568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (53555473) 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, 64822 + ... + 65642.

It is an arithmetic number, because the mean of its divisors is an integer number (1936632).

Almost surely, 2^53555472 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 53555472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77465280).

53555472 is an abundant number, since it is smaller than the sum of its proper divisors (101375088).

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

53555472 is a wasteful number, since it uses less digits than its factorization.

53555472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989 (or 977 counting only the distinct ones).

The product of its digits is 105000, while the sum is 36.

The square root of 53555472 is about 7318.1604245876. The cubic root of 53555472 is about 376.9362888864.

The spelling of 53555472 in words is "fifty-three million, five hundred fifty-five thousand, four hundred seventy-two".