145523516 has 12 divisors (see below), whose sum is σ = 261549288. Its totient is φ = 70795152.

The previous prime is 145523513. The next prime is 145523533. The reversal of 145523516 is 615325541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145523513) 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, 491486 + ... + 491781.

It is an arithmetic number, because the mean of its divisors is an integer number (21795774).

Almost surely, 2^145523516 is an apocalyptic number.

It is an amenable number.

145523516 is a deficient number, since it is larger than the sum of its proper divisors (116025772).

145523516 is a wasteful number, since it uses less digits than its factorization.

145523516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983308 (or 983306 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The square root of 145523516 is about 12063.3128119932. The cubic root of 145523516 is about 525.9902893049.

The spelling of 145523516 in words is "one hundred forty-five million, five hundred twenty-three thousand, five hundred sixteen".