55450249 has 2 divisors, whose sum is σ = 55450250. Its totient is φ = 55450248.

The previous prime is 55450247. The next prime is 55450259. The reversal of 55450249 is 94205455.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32410249 + 23040000 = 5693^2 + 4800^2 .

It is a cyclic number.

It is not a de Polignac number, because 55450249 - 2¹ = 55450247 is a prime.

It is a super-2 number, since 2×55450249² = 6149460228324002, which contains 22 as substring.

Together with 55450247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55450247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27725124 + 27725125.

It is an arithmetic number, because the mean of its divisors is an integer number (27725125).

Almost surely, 2^55450249 is an apocalyptic number.

It is an amenable number.

55450249 is a deficient number, since it is larger than the sum of its proper divisors (1).

55450249 is an equidigital number, since it uses as much as digits as its factorization.

55450249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 55450249 is about 7446.4923957525. The cubic root of 55450249 is about 381.3301698646.

The spelling of 55450249 in words is "fifty-five million, four hundred fifty thousand, two hundred forty-nine".