253501566 has 16 divisors (see below), whose sum is σ = 508658304. Its totient is φ = 84224664.

The previous prime is 253501537. The next prime is 253501609. The reversal of 253501566 is 665105352.

253501566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66970 + ... + 70653.

It is an arithmetic number, because the mean of its divisors is an integer number (31791144).

Almost surely, 2^253501566 is an apocalyptic number.

253501566 is an abundant number, since it is smaller than the sum of its proper divisors (255156738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253501566 is a wasteful number, since it uses less digits than its factorization.

253501566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137935.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 253501566 is about 15921.7325062319. The cubic root of 253501566 is about 632.8880305285. Note that the first 3 decimals are identical.

The spelling of 253501566 in words is "two hundred fifty-three million, five hundred one thousand, five hundred sixty-six".