55262989 has 4 divisors (see below), whose sum is σ = 55752156. Its totient is φ = 54773824.

The previous prime is 55262983. The next prime is 55263029. The reversal of 55262989 is 98926255.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27910089 + 27352900 = 5283^2 + 5230^2 .

It is a cyclic number.

It is not a de Polignac number, because 55262989 - 2⁷ = 55262861 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 (55262983) 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, 244414 + ... + 244639.

It is an arithmetic number, because the mean of its divisors is an integer number (13938039).

Almost surely, 2^55262989 is an apocalyptic number.

It is an amenable number.

55262989 is a deficient number, since it is larger than the sum of its proper divisors (489167).

55262989 is a wasteful number, since it uses less digits than its factorization.

55262989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489166.

The product of its digits is 388800, while the sum is 46.

The square root of 55262989 is about 7433.9080570047. The cubic root of 55262989 is about 380.9004247419.

It can be divided in two parts, 5526 and 2989, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 55262989 in words is "fifty-five million, two hundred sixty-two thousand, nine hundred eighty-nine".