3561554 has 4 divisors (see below), whose sum is σ = 5342334. Its totient is φ = 1780776.

The previous prime is 3561541. The next prime is 3561581. The reversal of 3561554 is 4551653.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4551653 = 223 ⋅20411.

It can be written as a sum of positive squares in only one way, i.e., 2036329 + 1525225 = 1427^2 + 1235^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 890387 + ... + 890390.

Almost surely, 2^3561554 is an apocalyptic number.

3561554 is a deficient number, since it is larger than the sum of its proper divisors (1780780).

3561554 is a wasteful number, since it uses less digits than its factorization.

3561554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780779.

The product of its digits is 9000, while the sum is 29.

The square root of 3561554 is about 1887.2079906571. The cubic root of 3561554 is about 152.7143487612.

Subtracting 3561554 from its reverse (4551653), we obtain a palindrome (990099).

The spelling of 3561554 in words is "three million, five hundred sixty-one thousand, five hundred fifty-four".