55773461 has 2 divisors, whose sum is σ = 55773462. Its totient is φ = 55773460.

The previous prime is 55773449. The next prime is 55773463. The reversal of 55773461 is 16437755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45495025 + 10278436 = 6745^2 + 3206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55773461 is a prime.

It is a super-2 number, since 2×55773461² = 6221357903837042, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 55773463, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55773463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27886730 + 27886731.

It is an arithmetic number, because the mean of its divisors is an integer number (27886731).

Almost surely, 2^55773461 is an apocalyptic number.

It is an amenable number.

55773461 is a deficient number, since it is larger than the sum of its proper divisors (1).

55773461 is an equidigital number, since it uses as much as digits as its factorization.

55773461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88200, while the sum is 38.

The square root of 55773461 is about 7468.1631610457. The cubic root of 55773461 is about 382.0696422830.

The spelling of 55773461 in words is "fifty-five million, seven hundred seventy-three thousand, four hundred sixty-one".