52661867 has 2 divisors, whose sum is σ = 52661868. Its totient is φ = 52661866.

The previous prime is 52661857. The next prime is 52661897. The reversal of 52661867 is 76816625.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52661867 is a prime.

It is a super-3 number, since 3×52661867³ (a number of 24 digits) contains 333 as substring.

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, 26330933 + 26330934.

It is an arithmetic number, because the mean of its divisors is an integer number (26330934).

Almost surely, 2^52661867 is an apocalyptic number.

52661867 is a deficient number, since it is larger than the sum of its proper divisors (1).

52661867 is an equidigital number, since it uses as much as digits as its factorization.

52661867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 52661867 is about 7256.8496608377. The cubic root of 52661867 is about 374.8280503528.

The spelling of 52661867 in words is "fifty-two million, six hundred sixty-one thousand, eight hundred sixty-seven".