55377487 has 4 divisors (see below), whose sum is σ = 60411816. Its totient is φ = 50343160.

The previous prime is 55377481. The next prime is 55377503. The reversal of 55377487 is 78477355.

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

It is a cyclic number.

It is not a de Polignac number, because 55377487 - 2³ = 55377479 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 (55377481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2517148 + ... + 2517169.

It is an arithmetic number, because the mean of its divisors is an integer number (15102954).

Almost surely, 2^55377487 is an apocalyptic number.

55377487 is a deficient number, since it is larger than the sum of its proper divisors (5034329).

55377487 is a wasteful number, since it uses less digits than its factorization.

55377487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5034328.

The product of its digits is 823200, while the sum is 46.

The square root of 55377487 is about 7441.6051359905. The cubic root of 55377487 is about 381.1633026190.

The spelling of 55377487 in words is "fifty-five million, three hundred seventy-seven thousand, four hundred eighty-seven".