145180801 has 4 divisors (see below), whose sum is σ = 145820592. Its totient is φ = 144541012.

The previous prime is 145180787. The next prime is 145180811. The reversal of 145180801 is 108081541.

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, and also an emirpimes, since its reverse is a distinct semiprime: 108081541 = 5209 ⋅20749.

It is a cyclic number.

It is not a de Polignac number, because 145180801 - 2¹⁵ = 145148033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145180801.

It is not an unprimeable number, because it can be changed into a prime (145180811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319555 + ... + 320008.

It is an arithmetic number, because the mean of its divisors is an integer number (36455148).

Almost surely, 2^145180801 is an apocalyptic number.

It is an amenable number.

145180801 is a deficient number, since it is larger than the sum of its proper divisors (639791).

145180801 is an equidigital number, since it uses as much as digits as its factorization.

145180801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639790.

The product of its (nonzero) digits is 1280, while the sum is 28.

The square root of 145180801 is about 12049.0995929156. The cubic root of 145180801 is about 525.5770537831.

It can be divided in two parts, 14 and 5180801, that added together give a palindrome (5180815).

The spelling of 145180801 in words is "one hundred forty-five million, one hundred eighty thousand, eight hundred one".