145523636 has 12 divisors (see below), whose sum is σ = 255158820. Its totient is φ = 72621120.

The previous prime is 145523617. The next prime is 145523639. The reversal of 145523636 is 636325541.

It can be written as a sum of positive squares in 2 ways, for example, as 16564900 + 128958736 = 4070^2 + 11356^2 .

It is a junction number, because it is equal to n+sod(n) for n = 145523596 and 145523605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145523639) 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, 32831 + ... + 36998.

It is an arithmetic number, because the mean of its divisors is an integer number (21263235).

Almost surely, 2^145523636 is an apocalyptic number.

It is an amenable number.

145523636 is a deficient number, since it is larger than the sum of its proper divisors (109635184).

145523636 is a wasteful number, since it uses less digits than its factorization.

145523636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70354 (or 70352 counting only the distinct ones).

The product of its digits is 64800, while the sum is 35.

The square root of 145523636 is about 12063.3177857503. The cubic root of 145523636 is about 525.9904338837.

The spelling of 145523636 in words is "one hundred forty-five million, five hundred twenty-three thousand, six hundred thirty-six".