55804432787 has 8 divisors (see below), whose sum is σ = 56930128560. Its totient is φ = 54685539360.

The previous prime is 55804432763. The next prime is 55804432793. The reversal of 55804432787 is 78723440855.

55804432787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 55804432787 - 2¹⁰ = 55804431763 is a prime.

It is a super-2 number, since 2×55804432787² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55804432687) 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, 1684013 + ... + 1716830.

It is an arithmetic number, because the mean of its divisors is an integer number (7116266070).

Almost surely, 2^55804432787 is an apocalyptic number.

55804432787 is a deficient number, since it is larger than the sum of its proper divisors (1125695773).

55804432787 is a wasteful number, since it uses less digits than its factorization.

55804432787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3401173.

The product of its (nonzero) digits is 7526400, while the sum is 53.

The spelling of 55804432787 in words is "fifty-five billion, eight hundred four million, four hundred thirty-two thousand, seven hundred eighty-seven".