55551853 has 4 divisors (see below), whose sum is σ = 63487840. Its totient is φ = 47615868.

The previous prime is 55551841. The next prime is 55551887. The reversal of 55551853 is 35815555.

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 55551853 - 2⁹ = 55551341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55555853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3967983 + ... + 3967996.

It is an arithmetic number, because the mean of its divisors is an integer number (15871960).

Almost surely, 2^55551853 is an apocalyptic number.

It is an amenable number.

55551853 is a deficient number, since it is larger than the sum of its proper divisors (7935987).

55551853 is an equidigital number, since it uses as much as digits as its factorization.

55551853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7935986.

The product of its digits is 75000, while the sum is 37.

The square root of 55551853 is about 7453.3115458835. The cubic root of 55551853 is about 381.5629372600.

The spelling of 55551853 in words is "fifty-five million, five hundred fifty-one thousand, eight hundred fifty-three".