145102001 has 4 divisors (see below), whose sum is σ = 158293104. Its totient is φ = 131910900.

The previous prime is 145101991. The next prime is 145102099. The reversal of 145102001 is 100201541.

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 145102001 - 2¹⁸ = 144839857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145102201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6595535 + ... + 6595556.

It is an arithmetic number, because the mean of its divisors is an integer number (39573276).

Almost surely, 2^145102001 is an apocalyptic number.

145102001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145102001 is a deficient number, since it is larger than the sum of its proper divisors (13191103).

145102001 is a wasteful number, since it uses less digits than its factorization.

145102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13191102.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 145102001 is about 12045.8291952028. The cubic root of 145102001 is about 525.4819471601.

Adding to 145102001 its reverse (100201541), we get a palindrome (245303542).

It can be divided in two parts, 14 and 5102001, that added together give a palindrome (5102015).

The spelling of 145102001 in words is "one hundred forty-five million, one hundred two thousand, one".