55006669 has 2 divisors, whose sum is σ = 55006670. Its totient is φ = 55006668.

The previous prime is 55006643. The next prime is 55006681. The reversal of 55006669 is 96660055.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40793769 + 14212900 = 6387^2 + 3770^2 .

It is a cyclic number.

It is not a de Polignac number, because 55006669 - 2²¹ = 52909517 is a prime.

It is a super-2 number, since 2×55006669² = 6051467268951122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55006619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27503334 + 27503335.

It is an arithmetic number, because the mean of its divisors is an integer number (27503335).

Almost surely, 2^55006669 is an apocalyptic number.

It is an amenable number.

55006669 is a deficient number, since it is larger than the sum of its proper divisors (1).

55006669 is an equidigital number, since it uses as much as digits as its factorization.

55006669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 55006669 is about 7416.6480973550. The cubic root of 55006669 is about 380.3106162973.

The spelling of 55006669 in words is "fifty-five million, six thousand, six hundred sixty-nine".