145611101 has 4 divisors (see below), whose sum is σ = 145791900. Its totient is φ = 145430304.

The previous prime is 145611077. The next prime is 145611113. The reversal of 145611101 is 101116541.

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 101707225 + 43903876 = 10085^2 + 6626^2 .

It is a cyclic number.

It is not a de Polignac number, because 145611101 - 2¹⁴ = 145594717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145611121) 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, 89186 + ... + 90803.

It is an arithmetic number, because the mean of its divisors is an integer number (36447975).

Almost surely, 2^145611101 is an apocalyptic number.

It is an amenable number.

145611101 is a deficient number, since it is larger than the sum of its proper divisors (180799).

145611101 is an equidigital number, since it uses as much as digits as its factorization.

145611101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180798.

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 145611101 is about 12066.9424876395. The cubic root of 145611101 is about 526.0957925745.

Adding to 145611101 its reverse (101116541), we get a palindrome (246727642).

The spelling of 145611101 in words is "one hundred forty-five million, six hundred eleven thousand, one hundred one".