145504022 has 4 divisors (see below), whose sum is σ = 218256036. Its totient is φ = 72752010.

The previous prime is 145504019. The next prime is 145504043. The reversal of 145504022 is 220405541.

It is a happy number.

145504022 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 220405541 = 5407 ⋅40763.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 36376004 + ... + 36376007.

It is an arithmetic number, because the mean of its divisors is an integer number (54564009).

Almost surely, 2^145504022 is an apocalyptic number.

145504022 is a deficient number, since it is larger than the sum of its proper divisors (72752014).

145504022 is an equidigital number, since it uses as much as digits as its factorization.

145504022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72752013.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 145504022 is about 12062.5047979265. The cubic root of 145504022 is about 525.9668014342.

Adding to 145504022 its reverse (220405541), we get a palindrome (365909563).

The spelling of 145504022 in words is "one hundred forty-five million, five hundred four thousand, twenty-two".