145451001 has 16 divisors (see below), whose sum is σ = 196269696. Its totient is φ = 95805696.

The previous prime is 145450937. The next prime is 145451021. The reversal of 145451001 is 100154541.

It is not a de Polignac number, because 145451001 - 2⁶ = 145450937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145451021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170091 + ... + 170943.

It is an arithmetic number, because the mean of its divisors is an integer number (12266856).

Almost surely, 2^145451001 is an apocalyptic number.

It is an amenable number.

145451001 is a deficient number, since it is larger than the sum of its proper divisors (50818695).

145451001 is a wasteful number, since it uses less digits than its factorization.

145451001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 145451001 is about 12060.3068368927. The cubic root of 145451001 is about 525.9029070405.

The spelling of 145451001 in words is "one hundred forty-five million, four hundred fifty-one thousand, one".