55788551 has 8 divisors (see below), whose sum is σ = 68662944. Its totient is φ = 44140320.

The previous prime is 55788539. The next prime is 55788553. The reversal of 55788551 is 15588755.

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

It is not a de Polignac number, because 55788551 - 2⁶ = 55788487 is a prime.

It is a super-2 number, since 2×55788551² = 6224724845359202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55788553) 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 7 ways as a sum of consecutive naturals, for example, 306440 + ... + 306621.

It is an arithmetic number, because the mean of its divisors is an integer number (8582868).

Almost surely, 2^55788551 is an apocalyptic number.

55788551 is a deficient number, since it is larger than the sum of its proper divisors (12874393).

55788551 is a wasteful number, since it uses less digits than its factorization.

55788551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613081.

The product of its digits is 280000, while the sum is 44.

The square root of 55788551 is about 7469.1733813053. The cubic root of 55788551 is about 382.1040966090.

The spelling of 55788551 in words is "fifty-five million, seven hundred eighty-eight thousand, five hundred fifty-one".