55977601 has 4 divisors (see below), whose sum is σ = 56473092. Its totient is φ = 55482112.

The previous prime is 55977563. The next prime is 55977613. The reversal of 55977601 is 10677955.

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

It can be written as a sum of positive squares in 2 ways, for example, as 490000 + 55487601 = 700^2 + 7449^2 .

It is a cyclic number.

It is not a de Polignac number, because 55977601 - 2¹³ = 55969409 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55977631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247576 + ... + 247801.

It is an arithmetic number, because the mean of its divisors is an integer number (14118273).

Almost surely, 2^55977601 is an apocalyptic number.

It is an amenable number.

55977601 is a deficient number, since it is larger than the sum of its proper divisors (495491).

55977601 is a wasteful number, since it uses less digits than its factorization.

55977601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495490.

The product of its (nonzero) digits is 66150, while the sum is 40.

The square root of 55977601 is about 7481.8180277256. The cubic root of 55977601 is about 382.5352205311.

The spelling of 55977601 in words is "fifty-five million, nine hundred seventy-seven thousand, six hundred one".