55622477 has 2 divisors, whose sum is σ = 55622478. Its totient is φ = 55622476.

The previous prime is 55622473. The next prime is 55622503. The reversal of 55622477 is 77422655.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44903401 + 10719076 = 6701^2 + 3274^2 .

It is a cyclic number.

It is not a de Polignac number, because 55622477 - 2² = 55622473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55622477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55622471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27811238 + 27811239.

It is an arithmetic number, because the mean of its divisors is an integer number (27811239).

Almost surely, 2^55622477 is an apocalyptic number.

It is an amenable number.

55622477 is a deficient number, since it is larger than the sum of its proper divisors (1).

55622477 is an equidigital number, since it uses as much as digits as its factorization.

55622477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 38.

The square root of 55622477 is about 7458.0478008659. The cubic root of 55622477 is about 381.7245645678.

The spelling of 55622477 in words is "fifty-five million, six hundred twenty-two thousand, four hundred seventy-seven".