249663553 has 16 divisors (see below), whose sum is σ = 272125440. Its totient is φ = 228182400.

The previous prime is 249663527. The next prime is 249663559. The reversal of 249663553 is 355366942.

It is not a de Polignac number, because 249663553 - 2⁵ = 249663521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249663559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327693 + ... + 328453.

It is an arithmetic number, because the mean of its divisors is an integer number (17007840).

Almost surely, 2^249663553 is an apocalyptic number.

It is an amenable number.

249663553 is a deficient number, since it is larger than the sum of its proper divisors (22461887).

249663553 is a wasteful number, since it uses less digits than its factorization.

249663553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368.

The product of its digits is 583200, while the sum is 43.

The square root of 249663553 is about 15800.7453305216. The cubic root of 249663553 is about 629.6778003087.

It can be divided in two parts, 2496 and 63553, that added together give a square (66049 = 257²).

The spelling of 249663553 in words is "two hundred forty-nine million, six hundred sixty-three thousand, five hundred fifty-three".