3561997 has 2 divisors, whose sum is σ = 3561998. Its totient is φ = 3561996.

The previous prime is 3561977. The next prime is 3562019. The reversal of 3561997 is 7991653.

3561997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2735716 + 826281 = 1654^2 + 909^2 .

It is an emirp because it is prime and its reverse (7991653) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3561997 - 2¹¹ = 3559949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3561907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1780998 + 1780999.

It is an arithmetic number, because the mean of its divisors is an integer number (1780999).

Almost surely, 2^3561997 is an apocalyptic number.

It is an amenable number.

3561997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3561997 is an equidigital number, since it uses as much as digits as its factorization.

3561997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51030, while the sum is 40.

The square root of 3561997 is about 1887.3253561588. The cubic root of 3561997 is about 152.7206802345.

The spelling of 3561997 in words is "three million, five hundred sixty-one thousand, nine hundred ninety-seven".