145452117 has 4 divisors (see below), whose sum is σ = 193936160. Its totient is φ = 96968076.

The previous prime is 145452113. The next prime is 145452137. The reversal of 145452117 is 711254541.

145452117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 145452117 - 2² = 145452113 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 (145452113) 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, 24242017 + ... + 24242022.

It is an arithmetic number, because the mean of its divisors is an integer number (48484040).

Almost surely, 2^145452117 is an apocalyptic number.

It is an amenable number.

145452117 is a deficient number, since it is larger than the sum of its proper divisors (48484043).

145452117 is an equidigital number, since it uses as much as digits as its factorization.

145452117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48484042.

The product of its digits is 5600, while the sum is 30.

The square root of 145452117 is about 12060.3531042835. The cubic root of 145452117 is about 525.9042520666.

The spelling of 145452117 in words is "one hundred forty-five million, four hundred fifty-two thousand, one hundred seventeen".