56169601 has 2 divisors, whose sum is σ = 56169602. Its totient is φ = 56169600.

The previous prime is 56169599. The next prime is 56169671. The reversal of 56169601 is 10696165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43560000 + 12609601 = 6600^2 + 3551^2 .

It is a cyclic number.

It is not a de Polignac number, because 56169601 - 2¹ = 56169599 is a prime.

Together with 56169599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56169671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28084800 + 28084801.

It is an arithmetic number, because the mean of its divisors is an integer number (28084801).

Almost surely, 2^56169601 is an apocalyptic number.

It is an amenable number.

56169601 is a deficient number, since it is larger than the sum of its proper divisors (1).

56169601 is an equidigital number, since it uses as much as digits as its factorization.

56169601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 56169601 is about 7494.6381500377. The cubic root of 56169601 is about 382.9720794886.

The spelling of 56169601 in words is "fifty-six million, one hundred sixty-nine thousand, six hundred one".