55071633 has 24 divisors (see below), whose sum is σ = 78187296. Its totient is φ = 34473600.

The previous prime is 55071631. The next prime is 55071641. The reversal of 55071633 is 33617055.

It is not a de Polignac number, because 55071633 - 2¹ = 55071631 is a prime.

It is a super-2 number, since 2×55071633² = 6065769522573378, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55071633.

It is not an unprimeable number, because it can be changed into a prime (55071631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228393 + ... + 228633.

It is an arithmetic number, because the mean of its divisors is an integer number (3257804).

Almost surely, 2^55071633 is an apocalyptic number.

It is an amenable number.

55071633 is a deficient number, since it is larger than the sum of its proper divisors (23115663).

55071633 is a wasteful number, since it uses less digits than its factorization.

55071633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 30.

The square root of 55071633 is about 7421.0264114878. The cubic root of 55071633 is about 380.4602755987.

Adding to 55071633 its reverse (33617055), we get a palindrome (88688688).

It can be divided in two parts, 5507 and 1633, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 55071633 in words is "fifty-five million, seventy-one thousand, six hundred thirty-three".