252887891101 has 4 divisors (see below), whose sum is σ = 252939919804. Its totient is φ = 252835862400.

The previous prime is 252887891059. The next prime is 252887891111. The reversal of 252887891101 is 101198788252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117354204900 + 135533686201 = 342570^2 + 368149^2 .

It is a cyclic number.

It is not a de Polignac number, because 252887891101 - 2⁹ = 252887890589 is a prime.

It is a super-2 number, since 2×252887891101² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252887891111) 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, 26007060 + ... + 26016781.

It is an arithmetic number, because the mean of its divisors is an integer number (63234979951).

Almost surely, 2^252887891101 is an apocalyptic number.

It is an amenable number.

252887891101 is a deficient number, since it is larger than the sum of its proper divisors (52028703).

252887891101 is an equidigital number, since it uses as much as digits as its factorization.

252887891101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52028702.

The product of its (nonzero) digits is 645120, while the sum is 52.

The spelling of 252887891101 in words is "two hundred fifty-two billion, eight hundred eighty-seven million, eight hundred ninety-one thousand, one hundred one".