145105001 has 4 divisors (see below), whose sum is σ = 145173072. Its totient is φ = 145036932.

The previous prime is 145104943. The next prime is 145105007. The reversal of 145105001 is 100501541.

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 145105001 - 2²² = 140910697 is a prime.

It is a super-2 number, since 2×145105001² = 42110922630420002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145105007) 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, 30731 + ... + 35136.

It is an arithmetic number, because the mean of its divisors is an integer number (36293268).

Almost surely, 2^145105001 is an apocalyptic number.

It is an amenable number.

145105001 is a deficient number, since it is larger than the sum of its proper divisors (68071).

145105001 is an equidigital number, since it uses as much as digits as its factorization.

145105001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68070.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 145105001 is about 12045.9537189880. The cubic root of 145105001 is about 525.4855686010.

Adding to 145105001 its reverse (100501541), we get a palindrome (245606542).

It can be divided in two parts, 14 and 5105001, that added together give a palindrome (5105015).

The spelling of 145105001 in words is "one hundred forty-five million, one hundred five thousand, one".