55212633 has 24 divisors (see below), whose sum is σ = 91361088. Its totient is φ = 31475232.

The previous prime is 55212631. The next prime is 55212649. The reversal of 55212633 is 33621255.

55212633 is a `hidden beast` number, since 5 + 5 + 21 + 2 + 633 = 666.

It is not a de Polignac number, because 55212633 - 2¹ = 55212631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55212597 and 55212606.

It is not an unprimeable number, because it can be changed into a prime (55212631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36235 + ... + 37727.

It is an arithmetic number, because the mean of its divisors is an integer number (3806712).

Almost surely, 2^55212633 is an apocalyptic number.

It is an amenable number.

55212633 is a deficient number, since it is larger than the sum of its proper divisors (36148455).

55212633 is a wasteful number, since it uses less digits than its factorization.

55212633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093 (or 2090 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 55212633 is about 7430.5203720870. The cubic root of 55212633 is about 380.7846965911.

Adding to 55212633 its reverse (33621255), we get a palindrome (88833888).

The spelling of 55212633 in words is "fifty-five million, two hundred twelve thousand, six hundred thirty-three".