36125561 has 8 divisors (see below), whose sum is σ = 39570120. Its totient is φ = 32827648.

The previous prime is 36125539. The next prime is 36125587. The reversal of 36125561 is 16552163.

It can be written as a sum of positive squares in 4 ways, for example, as 4541161 + 31584400 = 2131^2 + 5620^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36125561 - 2²² = 31931257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36125591) 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, 36146 + ... + 37131.

It is an arithmetic number, because the mean of its divisors is an integer number (4946265).

Almost surely, 2^36125561 is an apocalyptic number.

It is an amenable number.

36125561 is a deficient number, since it is larger than the sum of its proper divisors (3444559).

36125561 is a wasteful number, since it uses less digits than its factorization.

36125561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73323.

The product of its digits is 5400, while the sum is 29.

The square root of 36125561 is about 6010.4543089520. The cubic root of 36125561 is about 330.5761621230.

The spelling of 36125561 in words is "thirty-six million, one hundred twenty-five thousand, five hundred sixty-one".