145081501 has 4 divisors (see below), whose sum is σ = 145182400. Its totient is φ = 144980604.

The previous prime is 145081483. The next prime is 145081537. The reversal of 145081501 is 105180541.

It is a happy number.

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 145081501 - 2⁹ = 145080989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145081571) 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 3 ways as a sum of consecutive naturals, for example, 48261 + ... + 51178.

It is an arithmetic number, because the mean of its divisors is an integer number (36295600).

Almost surely, 2^145081501 is an apocalyptic number.

It is an amenable number.

145081501 is a deficient number, since it is larger than the sum of its proper divisors (100899).

145081501 is an equidigital number, since it uses as much as digits as its factorization.

145081501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100898.

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 145081501 is about 12044.9782482161. The cubic root of 145081501 is about 525.4571993110.

The spelling of 145081501 in words is "one hundred forty-five million, eighty-one thousand, five hundred one".