249562553 has 2 divisors, whose sum is σ = 249562554. Its totient is φ = 249562552.

The previous prime is 249562543. The next prime is 249562559. The reversal of 249562553 is 355265942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232654009 + 16908544 = 15253^2 + 4112^2 .

It is a cyclic number.

It is not a de Polignac number, because 249562553 - 2⁸ = 249562297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 249562553.

It is not a weakly prime, because it can be changed into another prime (249562559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124781276 + 124781277.

It is an arithmetic number, because the mean of its divisors is an integer number (124781277).

Almost surely, 2^249562553 is an apocalyptic number.

It is an amenable number.

249562553 is a deficient number, since it is larger than the sum of its proper divisors (1).

249562553 is an equidigital number, since it uses as much as digits as its factorization.

249562553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324000, while the sum is 41.

The square root of 249562553 is about 15797.5489554551. The cubic root of 249562553 is about 629.5928779736.

The spelling of 249562553 in words is "two hundred forty-nine million, five hundred sixty-two thousand, five hundred fifty-three".