53390549 has 2 divisors, whose sum is σ = 53390550. Its totient is φ = 53390548.

The previous prime is 53390531. The next prime is 53390621. The reversal of 53390549 is 94509335.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51480625 + 1909924 = 7175^2 + 1382^2 .

It is a cyclic number.

It is not a de Polignac number, because 53390549 - 2¹² = 53386453 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53395549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26695274 + 26695275.

It is an arithmetic number, because the mean of its divisors is an integer number (26695275).

Almost surely, 2^53390549 is an apocalyptic number.

It is an amenable number.

53390549 is a deficient number, since it is larger than the sum of its proper divisors (1).

53390549 is an equidigital number, since it uses as much as digits as its factorization.

53390549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72900, while the sum is 38.

The square root of 53390549 is about 7306.8836722641. The cubic root of 53390549 is about 376.5489684560.

The spelling of 53390549 in words is "fifty-three million, three hundred ninety thousand, five hundred forty-nine".