5561977 has 2 divisors, whose sum is σ = 5561978. Its totient is φ = 5561976.

The previous prime is 5561971. The next prime is 5561981. The reversal of 5561977 is 7791655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4260096 + 1301881 = 2064^2 + 1141^2 .

It is a cyclic number.

It is not a de Polignac number, because 5561977 - 2⁷ = 5561849 is a prime.

It is not a weakly prime, because it can be changed into another prime (5561971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780988 + 2780989.

It is an arithmetic number, because the mean of its divisors is an integer number (2780989).

Almost surely, 2^5561977 is an apocalyptic number.

It is an amenable number.

5561977 is a deficient number, since it is larger than the sum of its proper divisors (1).

5561977 is an equidigital number, since it uses as much as digits as its factorization.

5561977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66150, while the sum is 40.

The square root of 5561977 is about 2358.3844046296. The cubic root of 5561977 is about 177.1779732858.

It can be divided in two parts, 55619 and 77, that added together give a square (55696 = 236²).

The spelling of 5561977 in words is "five million, five hundred sixty-one thousand, nine hundred seventy-seven".