252143577 has 16 divisors (see below), whose sum is σ = 426910080. Its totient is φ = 144081936.

The previous prime is 252143557. The next prime is 252143581. The reversal of 252143577 is 775341252.

252143577 is a `hidden beast` number, since 25 + 21 + 43 + 577 = 666.

It is not a de Polignac number, because 252143577 - 2⁸ = 252143321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252143557) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 666858 + ... + 667235.

It is an arithmetic number, because the mean of its divisors is an integer number (26681880).

Almost surely, 2^252143577 is an apocalyptic number.

252143577 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

252143577 is a deficient number, since it is larger than the sum of its proper divisors (174766503).

252143577 is a wasteful number, since it uses less digits than its factorization.

252143577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334109 (or 1334103 counting only the distinct ones).

The product of its digits is 58800, while the sum is 36.

The square root of 252143577 is about 15879.0294728614. The cubic root of 252143577 is about 631.7558951868.

The spelling of 252143577 in words is "two hundred fifty-two million, one hundred forty-three thousand, five hundred seventy-seven".