55505077 has 4 divisors (see below), whose sum is σ = 55542240. Its totient is φ = 55467916.

The previous prime is 55505071. The next prime is 55505081. The reversal of 55505077 is 77050555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77050555 = 5 ⋅15410111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55505077 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 (55505071) 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, 16243 + ... + 19360.

It is an arithmetic number, because the mean of its divisors is an integer number (13885560).

Almost surely, 2^55505077 is an apocalyptic number.

It is an amenable number.

55505077 is a deficient number, since it is larger than the sum of its proper divisors (37163).

55505077 is a wasteful number, since it uses less digits than its factorization.

55505077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37162.

The product of its (nonzero) digits is 30625, while the sum is 34.

The square root of 55505077 is about 7450.1729510126. The cubic root of 55505077 is about 381.4558121218.

The spelling of 55505077 in words is "fifty-five million, five hundred five thousand, seventy-seven".