55739249 has 2 divisors, whose sum is σ = 55739250. Its totient is φ = 55739248.

The previous prime is 55739153. The next prime is 55739251. The reversal of 55739249 is 94293755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51739249 + 4000000 = 7193^2 + 2000^2 .

It is a cyclic number.

It is not a de Polignac number, because 55739249 - 2⁸ = 55738993 is a prime.

Together with 55739251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55739269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27869624 + 27869625.

It is an arithmetic number, because the mean of its divisors is an integer number (27869625).

Almost surely, 2^55739249 is an apocalyptic number.

It is an amenable number.

55739249 is a deficient number, since it is larger than the sum of its proper divisors (1).

55739249 is an equidigital number, since it uses as much as digits as its factorization.

55739249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 340200, while the sum is 44.

The square root of 55739249 is about 7465.8722866119. The cubic root of 55739249 is about 381.9915045213.

The spelling of 55739249 in words is "fifty-five million, seven hundred thirty-nine thousand, two hundred forty-nine".