145645801 has 16 divisors (see below), whose sum is σ = 176855040. Its totient is φ = 117270720.

The previous prime is 145645793. The next prime is 145645823. The reversal of 145645801 is 108546541.

It is not a de Polignac number, because 145645801 - 2³ = 145645793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145645831) 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, 2185 + ... + 17206.

It is an arithmetic number, because the mean of its divisors is an integer number (11053440).

Almost surely, 2^145645801 is an apocalyptic number.

It is an amenable number.

145645801 is a deficient number, since it is larger than the sum of its proper divisors (31209239).

145645801 is a wasteful number, since it uses less digits than its factorization.

145645801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19464.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 145645801 is about 12068.3802144281. The cubic root of 145645801 is about 526.1375798511.

The spelling of 145645801 in words is "one hundred forty-five million, six hundred forty-five thousand, eight hundred one".