55089131 has 4 divisors (see below), whose sum is σ = 55708200. Its totient is φ = 54470064.

The previous prime is 55089121. The next prime is 55089169. The reversal of 55089131 is 13198055.

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

It is a cyclic number.

It is not a de Polignac number, because 55089131 - 2¹⁰ = 55088107 is a prime.

It is a super-2 number, since 2×55089131² = 6069624708670322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55089121) 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, 309401 + ... + 309578.

It is an arithmetic number, because the mean of its divisors is an integer number (13927050).

Almost surely, 2^55089131 is an apocalyptic number.

55089131 is a deficient number, since it is larger than the sum of its proper divisors (619069).

55089131 is an equidigital number, since it uses as much as digits as its factorization.

55089131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619068.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 55089131 is about 7422.2052652834. The cubic root of 55089131 is about 380.5005660870.

The spelling of 55089131 in words is "fifty-five million, eighty-nine thousand, one hundred thirty-one".