252041081 has 8 divisors (see below), whose sum is σ = 256427784. Its totient is φ = 247662720.

The previous prime is 252041071. The next prime is 252041087. The reversal of 252041081 is 180140252.

It can be written as a sum of positive squares in 4 ways, for example, as 36421225 + 215619856 = 6035^2 + 14684^2 .

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 252041081 - 2¹⁰ = 252040057 is a prime.

It is a super-2 number, since 2×252041081² = 127049413023297122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252041087) 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 7 ways as a sum of consecutive naturals, for example, 105755 + ... + 108111.

It is an arithmetic number, because the mean of its divisors is an integer number (32053473).

Almost surely, 2^252041081 is an apocalyptic number.

It is an amenable number.

252041081 is a deficient number, since it is larger than the sum of its proper divisors (4386703).

252041081 is a wasteful number, since it uses less digits than its factorization.

252041081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4171.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 252041081 is about 15875.8017435341. The cubic root of 252041081 is about 631.6702809653.

The spelling of 252041081 in words is "two hundred fifty-two million, forty-one thousand, eighty-one".