145515452 has 24 divisors (see below), whose sum is σ = 268477440. Its totient is φ = 68819760.

The previous prime is 145515449. The next prime is 145515497. The reversal of 145515452 is 254515541.

145515452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67877 + ... + 69987.

It is an arithmetic number, because the mean of its divisors is an integer number (11186560).

Almost surely, 2^145515452 is an apocalyptic number.

It is an amenable number.

145515452 is a deficient number, since it is larger than the sum of its proper divisors (122961988).

145515452 is a wasteful number, since it uses less digits than its factorization.

145515452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3041 (or 3039 counting only the distinct ones).

The product of its digits is 20000, while the sum is 32.

The square root of 145515452 is about 12062.9785708174. The cubic root of 145515452 is about 525.9805734318.

The spelling of 145515452 in words is "one hundred forty-five million, five hundred fifteen thousand, four hundred fifty-two".