252501641 has 8 divisors (see below), whose sum is σ = 288972864. Its totient is φ = 216130320.

The previous prime is 252501611. The next prime is 252501647. The reversal of 252501641 is 146105252.

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

It is not a de Polignac number, because 252501641 - 2⁶ = 252501577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252501641.

It is not an unprimeable number, because it can be changed into a prime (252501647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19475 + ... + 29736.

It is an arithmetic number, because the mean of its divisors is an integer number (36121608).

Almost surely, 2^252501641 is an apocalyptic number.

It is an amenable number.

252501641 is a deficient number, since it is larger than the sum of its proper divisors (36471223).

252501641 is an equidigital number, since it uses as much as digits as its factorization.

252501641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49951.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 252501641 is about 15890.3002174282. The cubic root of 252501641 is about 632.0548016692.

Adding to 252501641 its reverse (146105252), we get a palindrome (398606893).

The spelling of 252501641 in words is "two hundred fifty-two million, five hundred one thousand, six hundred forty-one".