51027877 has 2 divisors, whose sum is σ = 51027878. Its totient is φ = 51027876.

The previous prime is 51027859. The next prime is 51027929. The reversal of 51027877 is 77872015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47527236 + 3500641 = 6894^2 + 1871^2 .

It is a cyclic number.

It is not a de Polignac number, because 51027877 - 2¹⁹ = 50503589 is a prime.

It is a super-2 number, since 2×51027877² = 5207688462254258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51027827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25513938 + 25513939.

It is an arithmetic number, because the mean of its divisors is an integer number (25513939).

Almost surely, 2^51027877 is an apocalyptic number.

It is an amenable number.

51027877 is a deficient number, since it is larger than the sum of its proper divisors (1).

51027877 is an equidigital number, since it uses as much as digits as its factorization.

51027877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27440, while the sum is 37.

The square root of 51027877 is about 7143.3799422962. The cubic root of 51027877 is about 370.9105331791.

The spelling of 51027877 in words is "fifty-one million, twenty-seven thousand, eight hundred seventy-seven".