55212411 has 4 divisors (see below), whose sum is σ = 73616552. Its totient is φ = 36808272.

The previous prime is 55212401. The next prime is 55212427. The reversal of 55212411 is 11421255.

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

It is a de Polignac number, because none of the positive numbers 2^k-55212411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55212401) 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, 9202066 + ... + 9202071.

It is an arithmetic number, because the mean of its divisors is an integer number (18404138).

Almost surely, 2^55212411 is an apocalyptic number.

55212411 is a deficient number, since it is larger than the sum of its proper divisors (18404141).

55212411 is a wasteful number, since it uses less digits than its factorization.

55212411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18404140.

The product of its digits is 400, while the sum is 21.

The square root of 55212411 is about 7430.5054336835. The cubic root of 55212411 is about 380.7841862350.

Adding to 55212411 its reverse (11421255), we get a palindrome (66633666).

The spelling of 55212411 in words is "fifty-five million, two hundred twelve thousand, four hundred eleven".