253550566 has 8 divisors (see below), whose sum is σ = 390605040. Its totient is φ = 123348888.

The previous prime is 253550543. The next prime is 253550599. The reversal of 253550566 is 665055352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1713106 + ... + 1713253.

It is an arithmetic number, because the mean of its divisors is an integer number (48825630).

Almost surely, 2^253550566 is an apocalyptic number.

253550566 is a deficient number, since it is larger than the sum of its proper divisors (137054474).

253550566 is a wasteful number, since it uses less digits than its factorization.

253550566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3426398.

The product of its (nonzero) digits is 135000, while the sum is 37.

The square root of 253550566 is about 15923.2712091454. The cubic root of 253550566 is about 632.9288054451.

The spelling of 253550566 in words is "two hundred fifty-three million, five hundred fifty thousand, five hundred sixty-six".