55577111 has 2 divisors, whose sum is σ = 55577112. Its totient is φ = 55577110.

The previous prime is 55577101. The next prime is 55577117. The reversal of 55577111 is 11177555.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55577111 - 2⁶ = 55577047 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55577117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27788555 + 27788556.

It is an arithmetic number, because the mean of its divisors is an integer number (27788556).

Almost surely, 2^55577111 is an apocalyptic number.

55577111 is a deficient number, since it is larger than the sum of its proper divisors (1).

55577111 is an equidigital number, since it uses as much as digits as its factorization.

55577111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6125, while the sum is 32.

The square root of 55577111 is about 7455.0057679387. The cubic root of 55577111 is about 381.6207574518.

The spelling of 55577111 in words is "fifty-five million, five hundred seventy-seven thousand, one hundred eleven".