101387533 has 4 divisors (see below), whose sum is σ = 109186588. Its totient is φ = 93588480.

The previous prime is 101387521. The next prime is 101387543. The reversal of 101387533 is 335783101.

It is a happy number.

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 4502884 + 96884649 = 2122^2 + 9843^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101387533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101387495 and 101387504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101387543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3899508 + ... + 3899533.

It is an arithmetic number, because the mean of its divisors is an integer number (27296647).

Almost surely, 2^101387533 is an apocalyptic number.

101387533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

101387533 is a deficient number, since it is larger than the sum of its proper divisors (7799055).

101387533 is an equidigital number, since it uses as much as digits as its factorization.

101387533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7799054.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 101387533 is about 10069.1376492727. The cubic root of 101387533 is about 466.2958159713.

It can be divided in two parts, 10138 and 7533, that added together give a palindrome (17671).

The spelling of 101387533 in words is "one hundred one million, three hundred eighty-seven thousand, five hundred thirty-three".