5661027457 has 2 divisors, whose sum is σ = 5661027458. Its totient is φ = 5661027456.

The previous prime is 5661027419. The next prime is 5661027499. The reversal of 5661027457 is 7547201665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5655190401 + 5837056 = 75201^2 + 2416^2 .

It is a cyclic number.

It is not a de Polignac number, because 5661027457 - 2¹⁹ = 5660503169 is a prime.

It is not a weakly prime, because it can be changed into another prime (5661067457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2830513728 + 2830513729.

It is an arithmetic number, because the mean of its divisors is an integer number (2830513729).

Almost surely, 2^5661027457 is an apocalyptic number.

It is an amenable number.

5661027457 is a deficient number, since it is larger than the sum of its proper divisors (1).

5661027457 is an equidigital number, since it uses as much as digits as its factorization.

5661027457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 352800, while the sum is 43.

The square root of 5661027457 is about 75239.7996873995. The cubic root of 5661027457 is about 1782.2354879097.

The spelling of 5661027457 in words is "five billion, six hundred sixty-one million, twenty-seven thousand, four hundred fifty-seven".