252581001 has 4 divisors (see below), whose sum is σ = 336774672. Its totient is φ = 168387332.

The previous prime is 252580973. The next prime is 252581023. The reversal of 252581001 is 100185252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252581001 - 2¹⁷ = 252449929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252581071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42096831 + ... + 42096836.

It is an arithmetic number, because the mean of its divisors is an integer number (84193668).

Almost surely, 2^252581001 is an apocalyptic number.

It is an amenable number.

252581001 is a deficient number, since it is larger than the sum of its proper divisors (84193671).

252581001 is an equidigital number, since it uses as much as digits as its factorization.

252581001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84193670.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 252581001 is about 15892.7971421018. The cubic root of 252581001 is about 632.1210119517.

The spelling of 252581001 in words is "two hundred fifty-two million, five hundred eighty-one thousand, one".