55553977 has 8 divisors (see below), whose sum is σ = 59394816. Its totient is φ = 51776832.

The previous prime is 55553963. The next prime is 55553999. The reversal of 55553977 is 77935555.

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

It is not a de Polignac number, because 55553977 - 2¹¹ = 55551929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55553917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14113 + ... + 17614.

It is an arithmetic number, because the mean of its divisors is an integer number (7424352).

Almost surely, 2^55553977 is an apocalyptic number.

It is an amenable number.

55553977 is a deficient number, since it is larger than the sum of its proper divisors (3840839).

55553977 is a wasteful number, since it uses less digits than its factorization.

55553977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31847.

The product of its digits is 826875, while the sum is 46.

The square root of 55553977 is about 7453.4540315212. The cubic root of 55553977 is about 381.5678001602.

The spelling of 55553977 in words is "fifty-five million, five hundred fifty-three thousand, nine hundred seventy-seven".