55587785 has 8 divisors (see below), whose sum is σ = 72769536. Its totient is φ = 40427440.

The previous prime is 55587769. The next prime is 55587811. The reversal of 55587785 is 58778555.

It is a happy number.

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

It is not a de Polignac number, because 55587785 - 2⁴ = 55587769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505289 + ... + 505398.

It is an arithmetic number, because the mean of its divisors is an integer number (9096192).

Almost surely, 2^55587785 is an apocalyptic number.

55587785 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55587785 is a deficient number, since it is larger than the sum of its proper divisors (17181751).

55587785 is a wasteful number, since it uses less digits than its factorization.

55587785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010703.

The product of its digits is 1960000, while the sum is 50.

The square root of 55587785 is about 7455.7216283872. The cubic root of 55587785 is about 381.6451869285.

The spelling of 55587785 in words is "fifty-five million, five hundred eighty-seven thousand, seven hundred eighty-five".