55985119 has 4 divisors (see below), whose sum is σ = 57041496. Its totient is φ = 54928744.

The previous prime is 55985117. The next prime is 55985123. The reversal of 55985119 is 91158955.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91158955 = 5 ⋅18231791.

It is a cyclic number.

It is not a de Polignac number, because 55985119 - 2¹ = 55985117 is a prime.

It is a super-2 number, since 2×55985119² = 6268667098888322, 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 (55985113) 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, 528109 + ... + 528214.

It is an arithmetic number, because the mean of its divisors is an integer number (14260374).

Almost surely, 2^55985119 is an apocalyptic number.

55985119 is a deficient number, since it is larger than the sum of its proper divisors (1056377).

55985119 is a wasteful number, since it uses less digits than its factorization.

55985119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056376.

The product of its digits is 81000, while the sum is 43.

The square root of 55985119 is about 7482.3204288509. The cubic root of 55985119 is about 382.5523450655.

The spelling of 55985119 in words is "fifty-five million, nine hundred eighty-five thousand, one hundred nineteen".