51658907 has 2 divisors, whose sum is σ = 51658908. Its totient is φ = 51658906.

The previous prime is 51658861. The next prime is 51658909. The reversal of 51658907 is 70985615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51658907 - 2¹⁶ = 51593371 is a prime.

Together with 51658909, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51658909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25829453 + 25829454.

It is an arithmetic number, because the mean of its divisors is an integer number (25829454).

Almost surely, 2^51658907 is an apocalyptic number.

51658907 is a deficient number, since it is larger than the sum of its proper divisors (1).

51658907 is an equidigital number, since it uses as much as digits as its factorization.

51658907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 51658907 is about 7187.4130951268. The cubic root of 51658907 is about 372.4332135568.

The spelling of 51658907 in words is "fifty-one million, six hundred fifty-eight thousand, nine hundred seven".