101155345 has 4 divisors (see below), whose sum is σ = 121386420. Its totient is φ = 80924272.

The previous prime is 101155343. The next prime is 101155361. The reversal of 101155345 is 543551101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543551101 = 67 ⋅8112703.

It can be written as a sum of positive squares in 2 ways, for example, as 21446161 + 79709184 = 4631^2 + 8928^2 .

It is a cyclic number.

It is not a de Polignac number, because 101155345 - 2¹ = 101155343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101155343) 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, 10115530 + ... + 10115539.

It is an arithmetic number, because the mean of its divisors is an integer number (30346605).

Almost surely, 2^101155345 is an apocalyptic number.

It is an amenable number.

101155345 is a deficient number, since it is larger than the sum of its proper divisors (20231075).

101155345 is an equidigital number, since it uses as much as digits as its factorization.

101155345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20231074.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 101155345 is about 10057.6013541997. The cubic root of 101155345 is about 465.9395885879.

The spelling of 101155345 in words is "one hundred one million, one hundred fifty-five thousand, three hundred forty-five".