105272487 has 8 divisors (see below), whose sum is σ = 155959280. Its totient is φ = 70181640.

The previous prime is 105272467. The next prime is 105272491. The reversal of 105272487 is 784272501.

105272487 is a `hidden beast` number, since 105 + 2 + 72 + 487 = 666.

It is not a de Polignac number, because 105272487 - 2⁶ = 105272423 is a prime.

It is a super-2 number, since 2×105272487² = 22164593038330338, which 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 (105272417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1949464 + ... + 1949517.

It is an arithmetic number, because the mean of its divisors is an integer number (19494910).

Almost surely, 2^105272487 is an apocalyptic number.

105272487 is a deficient number, since it is larger than the sum of its proper divisors (50686793).

105272487 is an equidigital number, since it uses as much as digits as its factorization.

105272487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3898990 (or 3898984 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 105272487 is about 10260.2381551307. The cubic root of 105272487 is about 472.1771440204.

The spelling of 105272487 in words is "one hundred five million, two hundred seventy-two thousand, four hundred eighty-seven".