55773449 has 2 divisors, whose sum is σ = 55773450. Its totient is φ = 55773448.

The previous prime is 55773373. The next prime is 55773461. The reversal of 55773449 is 94437755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52461049 + 3312400 = 7243^2 + 1820^2 .

It is a cyclic number.

It is not a de Polignac number, because 55773449 - 2¹² = 55769353 is a prime.

It is a super-2 number, since 2×55773449² = 6221355226711202, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (55773469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27886724 + 27886725.

It is an arithmetic number, because the mean of its divisors is an integer number (27886725).

Almost surely, 2^55773449 is an apocalyptic number.

It is an amenable number.

55773449 is a deficient number, since it is larger than the sum of its proper divisors (1).

55773449 is an equidigital number, since it uses as much as digits as its factorization.

55773449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529200, while the sum is 44.

The square root of 55773449 is about 7468.1623576352. The cubic root of 55773449 is about 382.0696148814.

The spelling of 55773449 in words is "fifty-five million, seven hundred seventy-three thousand, four hundred forty-nine".