55120936 has 32 divisors (see below), whose sum is σ = 117852840. Its totient is φ = 23943168.

The previous prime is 55120873. The next prime is 55120937. The reversal of 55120936 is 63902155.

It can be written as a sum of positive squares in 4 ways, for example, as 50324836 + 4796100 = 7094^2 + 2190^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55120898 and 55120907.

It is not an unprimeable number, because it can be changed into a prime (55120937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13821 + ... + 17356.

Almost surely, 2^55120936 is an apocalyptic number.

It is an amenable number.

55120936 is an abundant number, since it is smaller than the sum of its proper divisors (62731904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55120936 is a wasteful number, since it uses less digits than its factorization.

55120936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31213 (or 31209 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 55120936 is about 7424.3475134183. The cubic root of 55120936 is about 380.5737776993.

The spelling of 55120936 in words is "fifty-five million, one hundred twenty thousand, nine hundred thirty-six".