145430617 has 4 divisors (see below), whose sum is σ = 153084880. Its totient is φ = 137776356.

The previous prime is 145430591. The next prime is 145430629. The reversal of 145430617 is 716034541.

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 a cyclic number.

It is not a de Polignac number, because 145430617 - 2⁷ = 145430489 is a prime.

It is a super-2 number, since 2×145430617² = 42300128722001378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145430657) 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, 3827103 + ... + 3827140.

It is an arithmetic number, because the mean of its divisors is an integer number (38271220).

Almost surely, 2^145430617 is an apocalyptic number.

It is an amenable number.

145430617 is a deficient number, since it is larger than the sum of its proper divisors (7654263).

145430617 is an equidigital number, since it uses as much as digits as its factorization.

145430617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7654262.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 145430617 is about 12059.4617209890. The cubic root of 145430617 is about 525.8783386163.

The spelling of 145430617 in words is "one hundred forty-five million, four hundred thirty thousand, six hundred seventeen".