101487 has 4 divisors (see below), whose sum is σ = 135320. Its totient is φ = 67656.

The previous prime is 101483. The next prime is 101489. The reversal of 101487 is 784101.

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

It is not a de Polignac number, because 101487 - 2² = 101483 is a prime.

It is a super-2 number, since 2×101487² = 20599222338, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101483) 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, 16912 + ... + 16917.

It is an arithmetic number, because the mean of its divisors is an integer number (33830).

2¹⁰¹⁴⁸⁷ is an apocalyptic number.

101487 is a deficient number, since it is larger than the sum of its proper divisors (33833).

101487 is an equidigital number, since it uses as much as digits as its factorization.

101487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33832.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 101487 is about 318.5702434315. The cubic root of 101487 is about 46.6448253802.

Adding to 101487 its reverse (784101), we get a palindrome (885588).

The spelling of 101487 in words is "one hundred one thousand, four hundred eighty-seven".