51496969 has 2 divisors, whose sum is σ = 51496970. Its totient is φ = 51496968.

The previous prime is 51496919. The next prime is 51496979. The reversal of 51496969 is 96969415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46744569 + 4752400 = 6837^2 + 2180^2 .

It is a cyclic number.

It is not a de Polignac number, because 51496969 - 2⁹ = 51496457 is a prime.

It is a super-2 number, since 2×51496969² = 5303875632373922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51496909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25748484 + 25748485.

It is an arithmetic number, because the mean of its divisors is an integer number (25748485).

Almost surely, 2^51496969 is an apocalyptic number.

It is an amenable number.

51496969 is a deficient number, since it is larger than the sum of its proper divisors (1).

51496969 is an equidigital number, since it uses as much as digits as its factorization.

51496969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 524880, while the sum is 49.

The square root of 51496969 is about 7176.1388643197. The cubic root of 51496969 is about 372.0436439525.

The spelling of 51496969 in words is "fifty-one million, four hundred ninety-six thousand, nine hundred sixty-nine".