55208449 has 2 divisors, whose sum is σ = 55208450. Its totient is φ = 55208448.

The previous prime is 55208429. The next prime is 55208497. The reversal of 55208449 is 94480255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41280625 + 13927824 = 6425^2 + 3732^2 .

It is a cyclic number.

It is not a de Polignac number, because 55208449 - 2¹⁷ = 55077377 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55208429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27604224 + 27604225.

It is an arithmetic number, because the mean of its divisors is an integer number (27604225).

Almost surely, 2^55208449 is an apocalyptic number.

It is an amenable number.

55208449 is a deficient number, since it is larger than the sum of its proper divisors (1).

55208449 is an equidigital number, since it uses as much as digits as its factorization.

55208449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 55208449 is about 7430.2388252330. The cubic root of 55208449 is about 380.7750777573.

The spelling of 55208449 in words is "fifty-five million, two hundred eight thousand, four hundred forty-nine".