52661857 has 2 divisors, whose sum is σ = 52661858. Its totient is φ = 52661856.

The previous prime is 52661837. The next prime is 52661867. The reversal of 52661857 is 75816625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52649536 + 12321 = 7256^2 + 111^2 .

It is a cyclic number.

It is not a de Polignac number, because 52661857 - 2¹¹ = 52659809 is a prime.

It is not a weakly prime, because it can be changed into another prime (52661837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26330928 + 26330929.

It is an arithmetic number, because the mean of its divisors is an integer number (26330929).

Almost surely, 2^52661857 is an apocalyptic number.

It is an amenable number.

52661857 is a deficient number, since it is larger than the sum of its proper divisors (1).

52661857 is an equidigital number, since it uses as much as digits as its factorization.

52661857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 40.

The square root of 52661857 is about 7256.8489718334. The cubic root of 52661857 is about 374.8280266273.

The spelling of 52661857 in words is "fifty-two million, six hundred sixty-one thousand, eight hundred fifty-seven".