145613001 has 4 divisors (see below), whose sum is σ = 194150672. Its totient is φ = 97075332.

The previous prime is 145612997. The next prime is 145613029. The reversal of 145613001 is 100316541.

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 145613001 - 2² = 145612997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145613051) 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, 24268831 + ... + 24268836.

It is an arithmetic number, because the mean of its divisors is an integer number (48537668).

Almost surely, 2^145613001 is an apocalyptic number.

It is an amenable number.

145613001 is a deficient number, since it is larger than the sum of its proper divisors (48537671).

145613001 is an equidigital number, since it uses as much as digits as its factorization.

145613001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48537670.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 145613001 is about 12067.0212148649. The cubic root of 145613001 is about 526.0980808105.

Adding to 145613001 its reverse (100316541), we get a palindrome (245929542).

The spelling of 145613001 in words is "one hundred forty-five million, six hundred thirteen thousand, one".