105271489 has 4 divisors (see below), whose sum is σ = 105310656. Its totient is φ = 105232324.

The previous prime is 105271379. The next prime is 105271499. The reversal of 105271489 is 984172501.

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, and also an emirpimes, since its reverse is a distinct semiprime: 984172501 = 13 ⋅75705577.

It is a cyclic number.

It is not a de Polignac number, because 105271489 - 2¹³ = 105263297 is a prime.

It is a super-2 number, since 2×105271489² = 22164172792554242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105271499) 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, 15229 + ... + 21034.

It is an arithmetic number, because the mean of its divisors is an integer number (26327664).

Almost surely, 2^105271489 is an apocalyptic number.

It is an amenable number.

105271489 is a deficient number, since it is larger than the sum of its proper divisors (39167).

105271489 is an equidigital number, since it uses as much as digits as its factorization.

105271489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39166.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 105271489 is about 10260.1895206668. The cubic root of 105271489 is about 472.1756519108.

The spelling of 105271489 in words is "one hundred five million, two hundred seventy-one thousand, four hundred eighty-nine".