55709677 has 2 divisors, whose sum is σ = 55709678. Its totient is φ = 55709676.

The previous prime is 55709603. The next prime is 55709699. The reversal of 55709677 is 77690755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43744996 + 11964681 = 6614^2 + 3459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55709677 is a prime.

It is a super-2 number, since 2×55709677² = 6207136222888658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55709177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27854838 + 27854839.

It is an arithmetic number, because the mean of its divisors is an integer number (27854839).

Almost surely, 2^55709677 is an apocalyptic number.

It is an amenable number.

55709677 is a deficient number, since it is larger than the sum of its proper divisors (1).

55709677 is an equidigital number, since it uses as much as digits as its factorization.

55709677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 463050, while the sum is 46.

The square root of 55709677 is about 7463.8915452999. The cubic root of 55709677 is about 381.9239384209.

The spelling of 55709677 in words is "fifty-five million, seven hundred nine thousand, six hundred seventy-seven".