55120519 has 4 divisors (see below), whose sum is σ = 56293344. Its totient is φ = 53947696.

The previous prime is 55120469. The next prime is 55120531. The reversal of 55120519 is 91502155.

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 55120519 - 2⁷ = 55120391 is a prime.

It is a super-2 number, since 2×55120519² = 6076543229658722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55121519) 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 3 ways as a sum of consecutive naturals, for example, 586342 + ... + 586435.

It is an arithmetic number, because the mean of its divisors is an integer number (14073336).

Almost surely, 2^55120519 is an apocalyptic number.

55120519 is a deficient number, since it is larger than the sum of its proper divisors (1172825).

55120519 is a wasteful number, since it uses less digits than its factorization.

55120519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172824.

The product of its (nonzero) digits is 2250, while the sum is 28.

The square root of 55120519 is about 7424.3194300892. The cubic root of 55120519 is about 380.5728179934.

The spelling of 55120519 in words is "fifty-five million, one hundred twenty thousand, five hundred nineteen".