145055001 has 16 divisors (see below), whose sum is σ = 238039424. Its totient is φ = 76512384.

The previous prime is 145054993. The next prime is 145055017. The reversal of 145055001 is 100550541.

It is not a de Polignac number, because 145055001 - 2³ = 145054993 is a prime.

It is a super-2 number, since 2×145055001² = 42081906630220002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (145055021) 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 15 ways as a sum of consecutive naturals, for example, 265396 + ... + 265941.

It is an arithmetic number, because the mean of its divisors is an integer number (14877464).

Almost surely, 2^145055001 is an apocalyptic number.

It is an amenable number.

145055001 is a deficient number, since it is larger than the sum of its proper divisors (92984423).

145055001 is a wasteful number, since it uses less digits than its factorization.

145055001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531360.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 145055001 is about 12043.8781544816. The cubic root of 145055001 is about 525.4252047342.

The spelling of 145055001 in words is "one hundred forty-five million, fifty-five thousand, one".