55551449 has 2 divisors, whose sum is σ = 55551450. Its totient is φ = 55551448.

The previous prime is 55551437. The next prime is 55551479. The reversal of 55551449 is 94415555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29214025 + 26337424 = 5405^2 + 5132^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55551449 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55551409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27775724 + 27775725.

It is an arithmetic number, because the mean of its divisors is an integer number (27775725).

Almost surely, 2^55551449 is an apocalyptic number.

It is an amenable number.

55551449 is a deficient number, since it is larger than the sum of its proper divisors (1).

55551449 is an equidigital number, since it uses as much as digits as its factorization.

55551449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90000, while the sum is 38.

The square root of 55551449 is about 7453.2844437872. The cubic root of 55551449 is about 381.5620122875.

The spelling of 55551449 in words is "fifty-five million, five hundred fifty-one thousand, four hundred forty-nine".