55775477 has 8 divisors (see below), whose sum is σ = 56376672. Its totient is φ = 55177200.

The previous prime is 55775413. The next prime is 55775509. The reversal of 55775477 is 77457755.

55775477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55775477 - 2⁶ = 55775413 is a prime.

It is a super-2 number, since 2×55775477² = 6221807669155058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55775407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70478 + ... + 71264.

It is an arithmetic number, because the mean of its divisors is an integer number (7047084).

Almost surely, 2^55775477 is an apocalyptic number.

It is an amenable number.

55775477 is a deficient number, since it is larger than the sum of its proper divisors (601195).

55775477 is a wasteful number, since it uses less digits than its factorization.

55775477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459.

The product of its digits is 1200500, while the sum is 47.

The square root of 55775477 is about 7468.2981327743. The cubic root of 55775477 is about 382.0742456858.

The spelling of 55775477 in words is "fifty-five million, seven hundred seventy-five thousand, four hundred seventy-seven".