55111404 has 24 divisors (see below), whose sum is σ = 134184960. Its totient is φ = 17571664.

The previous prime is 55111391. The next prime is 55111417. The reversal of 55111404 is 40411155.

It is an interprime number because it is at equal distance from previous prime (55111391) and next prime (55111417).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99564 + ... + 100115.

It is an arithmetic number, because the mean of its divisors is an integer number (5591040).

Almost surely, 2^55111404 is an apocalyptic number.

It is an amenable number.

55111404 is an abundant number, since it is smaller than the sum of its proper divisors (79073556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55111404 is a wasteful number, since it uses less digits than its factorization.

55111404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199709 (or 199707 counting only the distinct ones).

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

The square root of 55111404 is about 7423.7055437295. The cubic root of 55111404 is about 380.5518390396.

Adding to 55111404 its reverse (40411155), we get a palindrome (95522559).

The spelling of 55111404 in words is "fifty-five million, one hundred eleven thousand, four hundred four".