145523536 has 20 divisors (see below), whose sum is σ = 298537812. Its totient is φ = 68481536.

The previous prime is 145523533. The next prime is 145523549. The reversal of 145523536 is 635325541.

It can be written as a sum of positive squares in 2 ways, for example, as 108993600 + 36529936 = 10440^2 + 6044^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145523533) 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, 267235 + ... + 267778.

Almost surely, 2^145523536 is an apocalyptic number.

145523536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145523536 is an abundant number, since it is smaller than the sum of its proper divisors (153014276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145523536 is a wasteful number, since it uses less digits than its factorization.

145523536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535038 (or 535032 counting only the distinct ones).

The product of its digits is 54000, while the sum is 34.

The square root of 145523536 is about 12063.3136409529. The cubic root of 145523536 is about 525.9903134014.

The spelling of 145523536 in words is "one hundred forty-five million, five hundred twenty-three thousand, five hundred thirty-six".