55009069 has 2 divisors, whose sum is σ = 55009070. Its totient is φ = 55009068.

The previous prime is 55009067. The next prime is 55009091. The reversal of 55009069 is 96090055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39501225 + 15507844 = 6285^2 + 3938^2 .

It is a cyclic number.

It is not a de Polignac number, because 55009069 - 2¹ = 55009067 is a prime.

It is a super-2 number, since 2×55009069² = 6051995344493522, which contains 22 as substring.

Together with 55009067, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55009061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27504534 + 27504535.

It is an arithmetic number, because the mean of its divisors is an integer number (27504535).

Almost surely, 2^55009069 is an apocalyptic number.

It is an amenable number.

55009069 is a deficient number, since it is larger than the sum of its proper divisors (1).

55009069 is an equidigital number, since it uses as much as digits as its factorization.

55009069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 55009069 is about 7416.8098937481. The cubic root of 55009069 is about 380.3161473370.

The spelling of 55009069 in words is "fifty-five million, nine thousand, sixty-nine".