51473969 has 2 divisors, whose sum is σ = 51473970. Its totient is φ = 51473968.

The previous prime is 51473963. The next prime is 51473999. The reversal of 51473969 is 96937415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32638369 + 18835600 = 5713^2 + 4340^2 .

It is a cyclic number.

It is not a de Polignac number, because 51473969 - 2⁴ = 51473953 is a prime.

It is a super-2 number, since 2×51473969² = 5299138969225922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51473963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25736984 + 25736985.

It is an arithmetic number, because the mean of its divisors is an integer number (25736985).

Almost surely, 2^51473969 is an apocalyptic number.

It is an amenable number.

51473969 is a deficient number, since it is larger than the sum of its proper divisors (1).

51473969 is an equidigital number, since it uses as much as digits as its factorization.

51473969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 44.

The square root of 51473969 is about 7174.5361522540. The cubic root of 51473969 is about 371.9882473067.

The spelling of 51473969 in words is "fifty-one million, four hundred seventy-three thousand, nine hundred sixty-nine".