3554069561 has 4 divisors (see below), whose sum is σ = 4061793792. Its totient is φ = 3046345332.

The previous prime is 3554069551. The next prime is 3554069573. The reversal of 3554069561 is 1659604553.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1659604553 = 2579 ⋅643507.

It is a cyclic number.

It is not a de Polignac number, because 3554069561 - 2²² = 3549875257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3554069501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253862105 + ... + 253862118.

It is an arithmetic number, because the mean of its divisors is an integer number (1015448448).

Almost surely, 2^3554069561 is an apocalyptic number.

It is an amenable number.

3554069561 is a deficient number, since it is larger than the sum of its proper divisors (507724231).

3554069561 is an equidigital number, since it uses as much as digits as its factorization.

3554069561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507724230.

The product of its (nonzero) digits is 486000, while the sum is 44.

The square root of 3554069561 is about 59616.0176546539. The cubic root of 3554069561 is about 1526.0729972175.

The spelling of 3554069561 in words is "three billion, five hundred fifty-four million, sixty-nine thousand, five hundred sixty-one".