55005533 has 4 divisors (see below), whose sum is σ = 60006048. Its totient is φ = 50005020.

The previous prime is 55005521. The next prime is 55005553. The reversal of 55005533 is 33550055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55005533 - 2¹⁴ = 54989149 is a prime.

It is a super-2 number, since 2×55005533² = 6051217321228178, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55005553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2500241 + ... + 2500262.

It is an arithmetic number, because the mean of its divisors is an integer number (15001512).

Almost surely, 2^55005533 is an apocalyptic number.

It is an amenable number.

55005533 is a deficient number, since it is larger than the sum of its proper divisors (5000515).

55005533 is a wasteful number, since it uses less digits than its factorization.

55005533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000514.

The product of its (nonzero) digits is 5625, while the sum is 26.

The square root of 55005533 is about 7416.5715124982. The cubic root of 55005533 is about 380.3079982158.

Adding to 55005533 its reverse (33550055), we get a palindrome (88555588).

The spelling of 55005533 in words is "fifty-five million, five thousand, five hundred thirty-three".