51155077 has 2 divisors, whose sum is σ = 51155078. Its totient is φ = 51155076.

The previous prime is 51155063. The next prime is 51155081. The reversal of 51155077 is 77055115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50893956 + 261121 = 7134^2 + 511^2 .

It is a cyclic number.

It is not a de Polignac number, because 51155077 - 2¹¹ = 51153029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51155047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25577538 + 25577539.

It is an arithmetic number, because the mean of its divisors is an integer number (25577539).

Almost surely, 2^51155077 is an apocalyptic number.

It is an amenable number.

51155077 is a deficient number, since it is larger than the sum of its proper divisors (1).

51155077 is an equidigital number, since it uses as much as digits as its factorization.

51155077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6125, while the sum is 31.

The square root of 51155077 is about 7152.2777490811. The cubic root of 51155077 is about 371.2184738200.

The spelling of 51155077 in words is "fifty-one million, one hundred fifty-five thousand, seventy-seven".