145578601 has 4 divisors (see below), whose sum is σ = 166375552. Its totient is φ = 124781652.

The previous prime is 145578583. The next prime is 145578623. The reversal of 145578601 is 106875541.

145578601 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, and also an emirpimes, since its reverse is a distinct semiprime: 106875541 = 8387 ⋅12743.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145578601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145578401) 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, 10398465 + ... + 10398478.

It is an arithmetic number, because the mean of its divisors is an integer number (41593888).

Almost surely, 2^145578601 is an apocalyptic number.

It is an amenable number.

145578601 is a deficient number, since it is larger than the sum of its proper divisors (20796951).

145578601 is an equidigital number, since it uses as much as digits as its factorization.

145578601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20796950.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 145578601 is about 12065.5957581878. The cubic root of 145578601 is about 526.0566486142.

The spelling of 145578601 in words is "one hundred forty-five million, five hundred seventy-eight thousand, six hundred one".