145452101 has 4 divisors (see below), whose sum is σ = 148834752. Its totient is φ = 142069452.

The previous prime is 145452089. The next prime is 145452113. The reversal of 145452101 is 101254541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (145452089) and next prime (145452113).

It is a cyclic number.

It is not a de Polignac number, because 145452101 - 2⁶ = 145452037 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145452301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1691261 + ... + 1691346.

It is an arithmetic number, because the mean of its divisors is an integer number (37208688).

Almost surely, 2^145452101 is an apocalyptic number.

It is an amenable number.

145452101 is a deficient number, since it is larger than the sum of its proper divisors (3382651).

145452101 is an equidigital number, since it uses as much as digits as its factorization.

145452101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3382650.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 145452101 is about 12060.3524409530. The cubic root of 145452101 is about 525.9042327831.

The spelling of 145452101 in words is "one hundred forty-five million, four hundred fifty-two thousand, one hundred one".