252001481 has 4 divisors (see below), whose sum is σ = 252366864. Its totient is φ = 251636100.

The previous prime is 252001471. The next prime is 252001483. The reversal of 252001481 is 184100252.

252001481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-252001481 is a prime.

It is a super-2 number, since 2×252001481² = 127009492852386722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252001483) 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, 181655 + ... + 183036.

It is an arithmetic number, because the mean of its divisors is an integer number (63091716).

Almost surely, 2^252001481 is an apocalyptic number.

It is an amenable number.

252001481 is a deficient number, since it is larger than the sum of its proper divisors (365383).

252001481 is an equidigital number, since it uses as much as digits as its factorization.

252001481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365382.

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

The square root of 252001481 is about 15874.5545134344. The cubic root of 252001481 is about 631.6371971347.

The spelling of 252001481 in words is "two hundred fifty-two million, one thousand, four hundred eighty-one".