55533001 has 4 divisors (see below), whose sum is σ = 55626004. Its totient is φ = 55440000.

The previous prime is 55532989. The next prime is 55533007. The reversal of 55533001 is 10033555.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48372025 + 7160976 = 6955^2 + 2676^2 .

It is a cyclic number.

It is not a de Polignac number, because 55533001 - 2⁵ = 55532969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55533007) 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, 45600 + ... + 46801.

It is an arithmetic number, because the mean of its divisors is an integer number (13906501).

Almost surely, 2^55533001 is an apocalyptic number.

It is an amenable number.

55533001 is a deficient number, since it is larger than the sum of its proper divisors (93003).

55533001 is an equidigital number, since it uses as much as digits as its factorization.

55533001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93002.

The product of its (nonzero) digits is 1125, while the sum is 22.

The square root of 55533001 is about 7452.0467658221. The cubic root of 55533001 is about 381.5197701530.

Adding to 55533001 its reverse (10033555), we get a palindrome (65566556).

The spelling of 55533001 in words is "fifty-five million, five hundred thirty-three thousand, one".