55873869 has 4 divisors (see below), whose sum is σ = 74498496. Its totient is φ = 37249244.

The previous prime is 55873847. The next prime is 55873897. The reversal of 55873869 is 96837855.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55873869 - 2⁵ = 55873837 is a prime.

It is a super-2 number, since 2×55873869² = 6243778474058322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55878869) 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, 9312309 + ... + 9312314.

It is an arithmetic number, because the mean of its divisors is an integer number (18624624).

Almost surely, 2^55873869 is an apocalyptic number.

It is an amenable number.

55873869 is a deficient number, since it is larger than the sum of its proper divisors (18624627).

55873869 is a wasteful number, since it uses less digits than its factorization.

55873869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18624626.

The product of its digits is 1814400, while the sum is 51.

The square root of 55873869 is about 7474.8825408832. The cubic root of 55873869 is about 382.2987826282.

The spelling of 55873869 in words is "fifty-five million, eight hundred seventy-three thousand, eight hundred sixty-nine".