51573877 has 2 divisors, whose sum is σ = 51573878. Its totient is φ = 51573876.

The previous prime is 51573839. The next prime is 51573881. The reversal of 51573877 is 77837515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33942276 + 17631601 = 5826^2 + 4199^2 .

It is a cyclic number.

It is not a de Polignac number, because 51573877 - 2⁷ = 51573749 is a prime.

It is a super-2 number, since 2×51573877² = 5319729577622258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51573077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25786938 + 25786939.

It is an arithmetic number, because the mean of its divisors is an integer number (25786939).

Almost surely, 2^51573877 is an apocalyptic number.

It is an amenable number.

51573877 is a deficient number, since it is larger than the sum of its proper divisors (1).

51573877 is an equidigital number, since it uses as much as digits as its factorization.

51573877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 205800, while the sum is 43.

The square root of 51573877 is about 7181.4954570758. The cubic root of 51573877 is about 372.2287609983.

The spelling of 51573877 in words is "fifty-one million, five hundred seventy-three thousand, eight hundred seventy-seven".