55977758 has 4 divisors (see below), whose sum is σ = 83966640. Its totient is φ = 27988878.

The previous prime is 55977739. The next prime is 55977767. The reversal of 55977758 is 85777955.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13994438 + ... + 13994441.

It is an arithmetic number, because the mean of its divisors is an integer number (20991660).

Almost surely, 2^55977758 is an apocalyptic number.

55977758 is a deficient number, since it is larger than the sum of its proper divisors (27988882).

55977758 is a wasteful number, since it uses less digits than its factorization.

55977758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27988881.

The product of its digits is 3087000, while the sum is 53.

The square root of 55977758 is about 7481.8285198205. The cubic root of 55977758 is about 382.5355781621.

The spelling of 55977758 in words is "fifty-five million, nine hundred seventy-seven thousand, seven hundred fifty-eight".