101539387 has 2 divisors, whose sum is σ = 101539388. Its totient is φ = 101539386.

The previous prime is 101539381. The next prime is 101539397. The reversal of 101539387 is 783935101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101539387 - 2²³ = 93150779 is a prime.

It is a super-2 number, since 2×101539387² = 20620494224671538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101539381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50769693 + 50769694.

It is an arithmetic number, because the mean of its divisors is an integer number (50769694).

Almost surely, 2^101539387 is an apocalyptic number.

101539387 is a deficient number, since it is larger than the sum of its proper divisors (1).

101539387 is an equidigital number, since it uses as much as digits as its factorization.

101539387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 101539387 is about 10076.6753941962. The cubic root of 101539387 is about 466.5284992892.

It can be divided in two parts, 101539 and 387, that added together give a triangular number (101926 = T₄₅₁).

The spelling of 101539387 in words is "one hundred one million, five hundred thirty-nine thousand, three hundred eighty-seven".