252561005 has 8 divisors (see below), whose sum is σ = 308210400. Its totient is φ = 198624016.

The previous prime is 252560983. The next prime is 252561013. The reversal of 252561005 is 500165252.

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

It is a cyclic number.

It is not a de Polignac number, because 252561005 - 2¹⁶ = 252495469 is a prime.

It is a super-2 number, since 2×252561005² = 127574122493220050, which contains 22 as substring.

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, 427775 + ... + 428364.

It is an arithmetic number, because the mean of its divisors is an integer number (38526300).

Almost surely, 2^252561005 is an apocalyptic number.

It is an amenable number.

252561005 is a deficient number, since it is larger than the sum of its proper divisors (55649395).

252561005 is an equidigital number, since it uses as much as digits as its factorization.

252561005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856203.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 252561005 is about 15892.1680396351. The cubic root of 252561005 is about 632.1043305369.

The spelling of 252561005 in words is "two hundred fifty-two million, five hundred sixty-one thousand, five".