55801033 has 4 divisors (see below), whose sum is σ = 56109508. Its totient is φ = 55492560.

The previous prime is 55801027. The next prime is 55801061. The reversal of 55801033 is 33010855.

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 328329 + 55472704 = 573^2 + 7448^2 .

It is a cyclic number.

It is not a de Polignac number, because 55801033 - 2⁵ = 55801001 is a prime.

It is a super-2 number, since 2×55801033² = 6227510567734178, 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 = 55800989 and 55801007.

It is not an unprimeable number, because it can be changed into a prime (55801063) 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, 153966 + ... + 154327.

It is an arithmetic number, because the mean of its divisors is an integer number (14027377).

Almost surely, 2^55801033 is an apocalyptic number.

It is an amenable number.

55801033 is a deficient number, since it is larger than the sum of its proper divisors (308475).

55801033 is a wasteful number, since it uses less digits than its factorization.

55801033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308474.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 55801033 is about 7470.0089022705. The cubic root of 55801033 is about 382.1325915098.

Adding to 55801033 its reverse (33010855), we get a palindrome (88811888).

The spelling of 55801033 in words is "fifty-five million, eight hundred one thousand, thirty-three".