51269873 has 2 divisors, whose sum is σ = 51269874. Its totient is φ = 51269872.

The previous prime is 51269861. The next prime is 51269891. The reversal of 51269873 is 37896215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40094224 + 11175649 = 6332^2 + 3343^2 .

It is a cyclic number.

It is not a de Polignac number, because 51269873 - 2¹² = 51265777 is a prime.

It is a super-2 number, since 2×51269873² = 5257199754872258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51269873.

It is not a weakly prime, because it can be changed into another prime (51269833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25634936 + 25634937.

It is an arithmetic number, because the mean of its divisors is an integer number (25634937).

Almost surely, 2^51269873 is an apocalyptic number.

It is an amenable number.

51269873 is a deficient number, since it is larger than the sum of its proper divisors (1).

51269873 is an equidigital number, since it uses as much as digits as its factorization.

51269873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 51269873 is about 7160.2983876372. The cubic root of 51269873 is about 371.4959474774.

The spelling of 51269873 in words is "fifty-one million, two hundred sixty-nine thousand, eight hundred seventy-three".