134952561 has 10 divisors (see below), whose sum is σ = 201595922. Its totient is φ = 89968320.

The previous prime is 134952553. The next prime is 134952581. The reversal of 134952561 is 165259431.

134952561 is a `hidden beast` number, since 1 + 3 + 4 + 95 + 2 + 561 = 666.

It can be written as a sum of positive squares in only one way, i.e., 84272400 + 50680161 = 9180^2 + 7119^2 .

It is not a de Polignac number, because 134952561 - 2³ = 134952553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (134952581) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 832960 + ... + 833121.

Almost surely, 2^134952561 is an apocalyptic number.

It is an amenable number.

134952561 is a deficient number, since it is larger than the sum of its proper divisors (66643361).

134952561 is an equidigital number, since it uses as much as digits as its factorization.

134952561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666093 (or 1666084 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 134952561 is about 11616.9084097276. The cubic root of 134952561 is about 512.9326884085.

The spelling of 134952561 in words is "one hundred thirty-four million, nine hundred fifty-two thousand, five hundred sixty-one".