51670867 has 2 divisors, whose sum is σ = 51670868. Its totient is φ = 51670866.

The previous prime is 51670807. The next prime is 51670891. The reversal of 51670867 is 76807615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51670867 - 2¹¹ = 51668819 is a prime.

It is not a weakly prime, because it can be changed into another prime (51670807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25835433 + 25835434.

It is an arithmetic number, because the mean of its divisors is an integer number (25835434).

Almost surely, 2^51670867 is an apocalyptic number.

51670867 is a deficient number, since it is larger than the sum of its proper divisors (1).

51670867 is an equidigital number, since it uses as much as digits as its factorization.

51670867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 51670867 is about 7188.2450570358. The cubic root of 51670867 is about 372.4619530829.

The spelling of 51670867 in words is "fifty-one million, six hundred seventy thousand, eight hundred sixty-seven".