55250033 has 4 divisors (see below), whose sum is σ = 55305588. Its totient is φ = 55194480.

The previous prime is 55250011. The next prime is 55250047. The reversal of 55250033 is 33005255.

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 667489 + 54582544 = 817^2 + 7388^2 .

It is a cyclic number.

It is not a de Polignac number, because 55250033 - 2¹⁶ = 55184497 is a prime.

It is a super-2 number, since 2×55250033² = 6105132293002178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55249990 and 55250008.

It is not an unprimeable number, because it can be changed into a prime (55250003) 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, 26258 + ... + 28283.

It is an arithmetic number, because the mean of its divisors is an integer number (13826397).

Almost surely, 2^55250033 is an apocalyptic number.

It is an amenable number.

55250033 is a deficient number, since it is larger than the sum of its proper divisors (55555).

55250033 is a wasteful number, since it uses less digits than its factorization.

55250033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55554.

The product of its (nonzero) digits is 2250, while the sum is 23.

The square root of 55250033 is about 7433.0365934791. The cubic root of 55250033 is about 380.8706559841.

Adding to 55250033 its reverse (33005255), we get a palindrome (88255288).

The spelling of 55250033 in words is "fifty-five million, two hundred fifty thousand, thirty-three".