20757601 has 2 divisors, whose sum is σ = 20757602. Its totient is φ = 20757600.

The previous prime is 20757589. The next prime is 20757613. The reversal of 20757601 is 10675702.

It is a balanced prime because it is at equal distance from previous prime (20757589) and next prime (20757613).

It can be written as a sum of positive squares in only one way, i.e., 17430625 + 3326976 = 4175^2 + 1824^2 .

It is a cyclic number.

It is not a de Polignac number, because 20757601 - 2¹⁹ = 20233313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20757601.

It is not a weakly prime, because it can be changed into another prime (20757641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10378800 + 10378801.

It is an arithmetic number, because the mean of its divisors is an integer number (10378801).

Almost surely, 2^20757601 is an apocalyptic number.

It is an amenable number.

20757601 is a deficient number, since it is larger than the sum of its proper divisors (1).

20757601 is an equidigital number, since it uses as much as digits as its factorization.

20757601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 20757601 is about 4556.0510313209. The cubic root of 20757601 is about 274.8267823763.

The spelling of 20757601 in words is "twenty million, seven hundred fifty-seven thousand, six hundred one".