145034561 has 12 divisors (see below), whose sum is σ = 173275668. Its totient is φ = 120953952.

The previous prime is 145034557. The next prime is 145034563. The reversal of 145034561 is 165430541.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 71503936 + 73530625 = 8456^2 + 8575^2 .

It is not a de Polignac number, because 145034561 - 2² = 145034557 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145034563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38186 + ... + 41811.

It is an arithmetic number, because the mean of its divisors is an integer number (14439639).

Almost surely, 2^145034561 is an apocalyptic number.

It is an amenable number.

145034561 is a deficient number, since it is larger than the sum of its proper divisors (28241107).

145034561 is an equidigital number, since it uses as much as digits as its factorization.

145034561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80048 (or 80041 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 145034561 is about 12043.0295607044. The cubic root of 145034561 is about 525.4005239910.

The spelling of 145034561 in words is "one hundred forty-five million, thirty-four thousand, five hundred sixty-one".