51271589 has 2 divisors, whose sum is σ = 51271590. Its totient is φ = 51271588.

The previous prime is 51271579. The next prime is 51271621. The reversal of 51271589 is 98517215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37149025 + 14122564 = 6095^2 + 3758^2 .

It is a cyclic number.

It is not a de Polignac number, because 51271589 - 2⁴ = 51271573 is a prime.

It is a super-3 number, since 3×51271589³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51271559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25635794 + 25635795.

It is an arithmetic number, because the mean of its divisors is an integer number (25635795).

Almost surely, 2^51271589 is an apocalyptic number.

It is an amenable number.

51271589 is a deficient number, since it is larger than the sum of its proper divisors (1).

51271589 is an equidigital number, since it uses as much as digits as its factorization.

51271589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 38.

The square root of 51271589 is about 7160.4182140431. The cubic root of 51271589 is about 371.5000920812.

The spelling of 51271589 in words is "fifty-one million, two hundred seventy-one thousand, five hundred eighty-nine".