145451565 has 64 divisors (see below), whose sum is σ = 297792000. Its totient is φ = 65981952.

The previous prime is 145451549. The next prime is 145451569. The reversal of 145451565 is 565154541.

145451565 is a `hidden beast` number, since 1 + 45 + 4 + 51 + 565 = 666.

145451565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145451565 - 2⁴ = 145451549 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145451569) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 140289 + ... + 141321.

It is an arithmetic number, because the mean of its divisors is an integer number (4653000).

Almost surely, 2^145451565 is an apocalyptic number.

145451565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145451565 is an abundant number, since it is smaller than the sum of its proper divisors (152340435).

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

145451565 is a wasteful number, since it uses less digits than its factorization.

145451565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 1197 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The square root of 145451565 is about 12060.3302193597. The cubic root of 145451565 is about 525.9035867857.

It can be divided in two parts, 14545 and 1565, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 145451565 in words is "one hundred forty-five million, four hundred fifty-one thousand, five hundred sixty-five".