55110551 has 4 divisors (see below), whose sum is σ = 55125432. Its totient is φ = 55095672.

The previous prime is 55110533. The next prime is 55110557. The reversal of 55110551 is 15501155.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 15501155 = 5 ⋅3100231.

It is a cyclic number.

It is not a de Polignac number, because 55110551 - 2¹⁸ = 54848407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55110557) 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, 2981 + ... + 10913.

It is an arithmetic number, because the mean of its divisors is an integer number (13781358).

Almost surely, 2^55110551 is an apocalyptic number.

55110551 is a deficient number, since it is larger than the sum of its proper divisors (14881).

55110551 is an equidigital number, since it uses as much as digits as its factorization.

55110551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14880.

The product of its (nonzero) digits is 625, while the sum is 23.

The square root of 55110551 is about 7423.6480924139. The cubic root of 55110551 is about 380.5498756686.

The spelling of 55110551 in words is "fifty-five million, one hundred ten thousand, five hundred fifty-one".