253557049 has 2 divisors, whose sum is σ = 253557050. Its totient is φ = 253557048.

The previous prime is 253557019. The next prime is 253557077. The reversal of 253557049 is 940755352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163021824 + 90535225 = 12768^2 + 9515^2 .

It is a cyclic number.

It is not a de Polignac number, because 253557049 - 2¹³ = 253548857 is a prime.

It is not a weakly prime, because it can be changed into another prime (253557019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126778524 + 126778525.

It is an arithmetic number, because the mean of its divisors is an integer number (126778525).

Almost surely, 2^253557049 is an apocalyptic number.

It is an amenable number.

253557049 is a deficient number, since it is larger than the sum of its proper divisors (1).

253557049 is an equidigital number, since it uses as much as digits as its factorization.

253557049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189000, while the sum is 40.

The square root of 253557049 is about 15923.4747778241. The cubic root of 253557049 is about 632.9341998227.

The spelling of 253557049 in words is "two hundred fifty-three million, five hundred fifty-seven thousand, forty-nine".