55533546 has 64 divisors (see below), whose sum is σ = 131063040. Its totient is φ = 17392320.

The previous prime is 55533539. The next prime is 55533547. The reversal of 55533546 is 64533555.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 55533546.

It is not an unprimeable number, because it can be changed into a prime (55533547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75396 + ... + 76128.

It is an arithmetic number, because the mean of its divisors is an integer number (2047860).

Almost surely, 2^55533546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55533546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65531520).

55533546 is an abundant number, since it is smaller than the sum of its proper divisors (75529494).

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

55533546 is a wasteful number, since it uses less digits than its factorization.

55533546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828 (or 822 counting only the distinct ones).

The product of its digits is 135000, while the sum is 36.

The square root of 55533546 is about 7452.0833328674. The cubic root of 55533546 is about 381.5210182253.

Subtracting 55533546 from its reverse (64533555), we obtain a palindrome (9000009).

The spelling of 55533546 in words is "fifty-five million, five hundred thirty-three thousand, five hundred forty-six".