145505536 has 72 divisors (see below), whose sum is σ = 319796064. Its totient is φ = 65525760.

The previous prime is 145505531. The next prime is 145505543. The reversal of 145505536 is 635505541.

It is a super-2 number, since 2×145505536² = 42343722013294592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145505531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458850 + ... + 459166.

It is an arithmetic number, because the mean of its divisors is an integer number (4441612).

Almost surely, 2^145505536 is an apocalyptic number.

145505536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145505536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159898032).

145505536 is an abundant number, since it is smaller than the sum of its proper divisors (174290528).

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

145505536 is a wasteful number, since it uses less digits than its factorization.

145505536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 34.

The square root of 145505536 is about 12062.5675542150. The cubic root of 145505536 is about 525.9686256930.

The spelling of 145505536 in words is "one hundred forty-five million, five hundred five thousand, five hundred thirty-six".