253455566 has 64 divisors (see below), whose sum is σ = 487710720. Its totient is φ = 96094080.

The previous prime is 253455541. The next prime is 253455577. The reversal of 253455566 is 665554352.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 942080 + ... + 942348.

It is an arithmetic number, because the mean of its divisors is an integer number (7620480).

Almost surely, 2^253455566 is an apocalyptic number.

253455566 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

253455566 is a deficient number, since it is larger than the sum of its proper divisors (234255154).

253455566 is a wasteful number, since it uses less digits than its factorization.

253455566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

The product of its digits is 540000, while the sum is 41.

The square root of 253455566 is about 15920.2878742817. The cubic root of 253455566 is about 632.8497472535.

The spelling of 253455566 in words is "two hundred fifty-three million, four hundred fifty-five thousand, five hundred sixty-six".