55119787 has 4 divisors (see below), whose sum is σ = 55198240. Its totient is φ = 55041336.

The previous prime is 55119781. The next prime is 55119791. The reversal of 55119787 is 78791155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78791155 = 5 ⋅15758231.

It is a cyclic number.

It is not a de Polignac number, because 55119787 - 2¹¹ = 55117739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55119781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38163 + ... + 39580.

It is an arithmetic number, because the mean of its divisors is an integer number (13799560).

Almost surely, 2^55119787 is an apocalyptic number.

55119787 is a deficient number, since it is larger than the sum of its proper divisors (78453).

55119787 is an equidigital number, since it uses as much as digits as its factorization.

55119787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78452.

The product of its digits is 88200, while the sum is 43.

The square root of 55119787 is about 7424.2701324777. The cubic root of 55119787 is about 380.5711333180.

The spelling of 55119787 in words is "fifty-five million, one hundred nineteen thousand, seven hundred eighty-seven".