55550531 has 8 divisors (see below), whose sum is σ = 57153600. Its totient is φ = 53959360.

The previous prime is 55550527. The next prime is 55550557. The reversal of 55550531 is 13505555.

55550531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55550531 - 2² = 55550527 is a prime.

It is a super-2 number, since 2×55550531² = 6171722988763922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55550494 and 55550503.

It is not an unprimeable number, because it can be changed into a prime (55550501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6965 + ... + 12633.

It is an arithmetic number, because the mean of its divisors is an integer number (7144200).

Almost surely, 2^55550531 is an apocalyptic number.

55550531 is a deficient number, since it is larger than the sum of its proper divisors (1603069).

55550531 is a wasteful number, since it uses less digits than its factorization.

55550531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5949.

The product of its (nonzero) digits is 9375, while the sum is 29.

The square root of 55550531 is about 7453.2228599445. Note that the first 3 decimals coincide. The cubic root of 55550531 is about 381.5599104770.

The spelling of 55550531 in words is "fifty-five million, five hundred fifty thousand, five hundred thirty-one".