51662671 has 2 divisors, whose sum is σ = 51662672. Its totient is φ = 51662670.

The previous prime is 51662641. The next prime is 51662683. The reversal of 51662671 is 17626615.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51662671 - 2²⁵ = 18108239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51662641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25831335 + 25831336.

It is an arithmetic number, because the mean of its divisors is an integer number (25831336).

Almost surely, 2^51662671 is an apocalyptic number.

51662671 is a deficient number, since it is larger than the sum of its proper divisors (1).

51662671 is an equidigital number, since it uses as much as digits as its factorization.

51662671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 34.

The square root of 51662671 is about 7187.6749370015. The cubic root of 51662671 is about 372.4422588157.

The spelling of 51662671 in words is "fifty-one million, six hundred sixty-two thousand, six hundred seventy-one".