55699249 has 2 divisors, whose sum is σ = 55699250. Its totient is φ = 55699248.

The previous prime is 55699247. The next prime is 55699291. The reversal of 55699249 is 94299655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47679025 + 8020224 = 6905^2 + 2832^2 .

It is a cyclic number.

It is not a de Polignac number, because 55699249 - 2¹ = 55699247 is a prime.

Together with 55699247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55699247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27849624 + 27849625.

It is an arithmetic number, because the mean of its divisors is an integer number (27849625).

Almost surely, 2^55699249 is an apocalyptic number.

It is an amenable number.

55699249 is a deficient number, since it is larger than the sum of its proper divisors (1).

55699249 is an equidigital number, since it uses as much as digits as its factorization.

55699249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 874800, while the sum is 49.

The square root of 55699249 is about 7463.1929494018. The cubic root of 55699249 is about 381.9001068261.

The spelling of 55699249 in words is "fifty-five million, six hundred ninety-nine thousand, two hundred forty-nine".