35551561 has 6 divisors (see below), whose sum is σ = 36539790. Its totient is φ = 34589376.

The previous prime is 35551559. The next prime is 35551609. The reversal of 35551561 is 16515553.

35551561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 13461561 + 22090000 = 3669^2 + 4700^2 .

It is not a de Polignac number, because 35551561 - 2¹ = 35551559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35551531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11616 + ... + 14353.

It is an arithmetic number, because the mean of its divisors is an integer number (6089965).

Almost surely, 2^35551561 is an apocalyptic number.

It is an amenable number.

35551561 is a deficient number, since it is larger than the sum of its proper divisors (988229).

35551561 is an equidigital number, since it uses as much as digits as its factorization.

35551561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26043 (or 26006 counting only the distinct ones).

The product of its digits is 11250, while the sum is 31.

The square root of 35551561 is about 5962.5129769251. The cubic root of 35551561 is about 328.8159618398.

The spelling of 35551561 in words is "thirty-five million, five hundred fifty-one thousand, five hundred sixty-one".