55310477 has 4 divisors (see below), whose sum is σ = 55485276. Its totient is φ = 55135680.

The previous prime is 55310473. The next prime is 55310483. The reversal of 55310477 is 77401355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77401355 = 5 ⋅15480271.

It can be written as a sum of positive squares in 2 ways, for example, as 10407076 + 44903401 = 3226^2 + 6701^2 .

It is a cyclic number.

It is not a de Polignac number, because 55310477 - 2² = 55310473 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55310471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86924 + ... + 87557.

It is an arithmetic number, because the mean of its divisors is an integer number (13871319).

Almost surely, 2^55310477 is an apocalyptic number.

It is an amenable number.

55310477 is a deficient number, since it is larger than the sum of its proper divisors (174799).

55310477 is a wasteful number, since it uses less digits than its factorization.

55310477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174798.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 55310477 is about 7437.1013842760. The cubic root of 55310477 is about 381.0094972637.

The spelling of 55310477 in words is "fifty-five million, three hundred ten thousand, four hundred seventy-seven".