101540255 has 4 divisors (see below), whose sum is σ = 121848312. Its totient is φ = 81232200.

The previous prime is 101540251. The next prime is 101540287. The reversal of 101540255 is 552045101.

It is a happy number.

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

It is not a de Polignac number, because 101540255 - 2² = 101540251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101540255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101540251) 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, 10154021 + ... + 10154030.

It is an arithmetic number, because the mean of its divisors is an integer number (30462078).

Almost surely, 2^101540255 is an apocalyptic number.

101540255 is a deficient number, since it is larger than the sum of its proper divisors (20308057).

101540255 is an equidigital number, since it uses as much as digits as its factorization.

101540255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20308056.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 101540255 is about 10076.7184638651. The cubic root of 101540255 is about 466.5298286439.

Adding to 101540255 its reverse (552045101), we get a palindrome (653585356).

The spelling of 101540255 in words is "one hundred one million, five hundred forty thousand, two hundred fifty-five".