55945579 has 2 divisors, whose sum is σ = 55945580. Its totient is φ = 55945578.

The previous prime is 55945567. The next prime is 55945597. The reversal of 55945579 is 97554955.

Together with next prime (55945597) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55945579 - 2¹⁵ = 55912811 is a prime.

It is not a weakly prime, because it can be changed into another prime (55943579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27972789 + 27972790.

It is an arithmetic number, because the mean of its divisors is an integer number (27972790).

Almost surely, 2^55945579 is an apocalyptic number.

55945579 is a deficient number, since it is larger than the sum of its proper divisors (1).

55945579 is an equidigital number, since it uses as much as digits as its factorization.

55945579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1417500, while the sum is 49.

The square root of 55945579 is about 7479.6777336995. The cubic root of 55945579 is about 382.4622634963.

The spelling of 55945579 in words is "fifty-five million, nine hundred forty-five thousand, five hundred seventy-nine".