51043957 has 2 divisors, whose sum is σ = 51043958. Its totient is φ = 51043956.

The previous prime is 51043919. The next prime is 51043961. The reversal of 51043957 is 75934015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28633201 + 22410756 = 5351^2 + 4734^2 .

It is a cyclic number.

It is not a de Polignac number, because 51043957 - 2¹¹ = 51041909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51043907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25521978 + 25521979.

It is an arithmetic number, because the mean of its divisors is an integer number (25521979).

Almost surely, 2^51043957 is an apocalyptic number.

It is an amenable number.

51043957 is a deficient number, since it is larger than the sum of its proper divisors (1).

51043957 is an equidigital number, since it uses as much as digits as its factorization.

51043957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 51043957 is about 7144.5053712626. The cubic root of 51043957 is about 370.9494897609.

The spelling of 51043957 in words is "fifty-one million, forty-three thousand, nine hundred fifty-seven".