51957469 has 2 divisors, whose sum is σ = 51957470. Its totient is φ = 51957468.

The previous prime is 51957463. The next prime is 51957511. The reversal of 51957469 is 96475915.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26656569 + 25300900 = 5163^2 + 5030^2 .

It is a cyclic number.

It is not a de Polignac number, because 51957469 - 2⁷ = 51957341 is a prime.

It is a super-2 number, since 2×51957469² = 5399157169771922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51957463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25978734 + 25978735.

It is an arithmetic number, because the mean of its divisors is an integer number (25978735).

Almost surely, 2^51957469 is an apocalyptic number.

It is an amenable number.

51957469 is a deficient number, since it is larger than the sum of its proper divisors (1).

51957469 is an equidigital number, since it uses as much as digits as its factorization.

51957469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 46.

The square root of 51957469 is about 7208.1529534271. The cubic root of 51957469 is about 373.1493267511.

The spelling of 51957469 in words is "fifty-one million, nine hundred fifty-seven thousand, four hundred sixty-nine".