2477561 has 2 divisors, whose sum is σ = 2477562. Its totient is φ = 2477560.

The previous prime is 2477521. The next prime is 2477599. The reversal of 2477561 is 1657742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2418025 + 59536 = 1555^2 + 244^2 .

It is a cyclic number.

It is not a de Polignac number, because 2477561 - 2¹⁸ = 2215417 is a prime.

It is a super-2 number, since 2×2477561² = 12276617017442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2477521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1238780 + 1238781.

It is an arithmetic number, because the mean of its divisors is an integer number (1238781).

2^2477561 is an apocalyptic number.

It is an amenable number.

2477561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2477561 is an equidigital number, since it uses as much as digits as its factorization.

2477561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 32.

The square root of 2477561 is about 1574.0270010391. The cubic root of 2477561 is about 135.3136010823.

The spelling of 2477561 in words is "two million, four hundred seventy-seven thousand, five hundred sixty-one".