5490206251 has 2 divisors, whose sum is σ = 5490206252. Its totient is φ = 5490206250.

The previous prime is 5490206243. The next prime is 5490206377. The reversal of 5490206251 is 1526020945.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5490206251 - 2³ = 5490206243 is a prime.

It is not a weakly prime, because it can be changed into another prime (5490206951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2745103125 + 2745103126.

It is an arithmetic number, because the mean of its divisors is an integer number (2745103126).

Almost surely, 2^5490206251 is an apocalyptic number.

5490206251 is a deficient number, since it is larger than the sum of its proper divisors (1).

5490206251 is an equidigital number, since it uses as much as digits as its factorization.

5490206251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 5490206251 is about 74095.9260081146. The cubic root of 5490206251 is about 1764.1258074095.

The spelling of 5490206251 in words is "five billion, four hundred ninety million, two hundred six thousand, two hundred fifty-one".