55330536 has 48 divisors (see below), whose sum is σ = 142992000. Its totient is φ = 17841120.

The previous prime is 55330531. The next prime is 55330549. The reversal of 55330536 is 63503355.

It is a super-2 number, since 2×55330536² = 6122936428094592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55330531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21865 + ... + 24263.

It is an arithmetic number, because the mean of its divisors is an integer number (2979000).

Almost surely, 2^55330536 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 55330536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71496000).

55330536 is an abundant number, since it is smaller than the sum of its proper divisors (87661464).

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

55330536 is a wasteful number, since it uses less digits than its factorization.

55330536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470 (or 2435 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 30.

The square root of 55330536 is about 7438.4498385080. The cubic root of 55330536 is about 381.0555509001.

The spelling of 55330536 in words is "fifty-five million, three hundred thirty thousand, five hundred thirty-six".