51957407 has 2 divisors, whose sum is σ = 51957408. Its totient is φ = 51957406.

The previous prime is 51957403. The next prime is 51957413. The reversal of 51957407 is 70475915.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51957407 - 2² = 51957403 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51957403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25978703 + 25978704.

It is an arithmetic number, because the mean of its divisors is an integer number (25978704).

Almost surely, 2^51957407 is an apocalyptic number.

51957407 is a deficient number, since it is larger than the sum of its proper divisors (1).

51957407 is an equidigital number, since it uses as much as digits as its factorization.

51957407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44100, while the sum is 38.

The square root of 51957407 is about 7208.1486527402. The cubic root of 51957407 is about 373.1491783267.

The spelling of 51957407 in words is "fifty-one million, nine hundred fifty-seven thousand, four hundred seven".