52661601 has 12 divisors (see below), whose sum is σ = 76130340. Its totient is φ = 35078400.

The previous prime is 52661579. The next prime is 52661603. The reversal of 52661601 is 10616625.

It is a happy number.

52661601 is a `hidden beast` number, since 52 + 6 + 6 + 1 + 601 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 37638225 + 15023376 = 6135^2 + 3876^2 .

It is not a de Polignac number, because 52661601 - 2⁷ = 52661473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52661603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17401 + ... + 20201.

It is an arithmetic number, because the mean of its divisors is an integer number (6344195).

Almost surely, 2^52661601 is an apocalyptic number.

It is an amenable number.

52661601 is a deficient number, since it is larger than the sum of its proper divisors (23468739).

52661601 is a wasteful number, since it uses less digits than its factorization.

52661601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4896 (or 4893 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 52661601 is about 7256.8313333024. The cubic root of 52661601 is about 374.8274192545.

The spelling of 52661601 in words is "fifty-two million, six hundred sixty-one thousand, six hundred one".