55669279 has 2 divisors, whose sum is σ = 55669280. Its totient is φ = 55669278.

The previous prime is 55669261. The next prime is 55669303. The reversal of 55669279 is 97296655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55669279 - 2¹³ = 55661087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55669249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27834639 + 27834640.

It is an arithmetic number, because the mean of its divisors is an integer number (27834640).

Almost surely, 2^55669279 is an apocalyptic number.

55669279 is a deficient number, since it is larger than the sum of its proper divisors (1).

55669279 is an equidigital number, since it uses as much as digits as its factorization.

55669279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1020600, while the sum is 49.

The square root of 55669279 is about 7461.1848254818. The cubic root of 55669279 is about 381.8315984240.

The spelling of 55669279 in words is "fifty-five million, six hundred sixty-nine thousand, two hundred seventy-nine".