55121363 has 16 divisors (see below), whose sum is σ = 63092736. Its totient is φ = 47667840.

The previous prime is 55121359. The next prime is 55121389. The reversal of 55121363 is 36312155.

55121363 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55121363 - 2² = 55121359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55121393) 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 15 ways as a sum of consecutive naturals, for example, 55931 + ... + 56907.

It is an arithmetic number, because the mean of its divisors is an integer number (3943296).

Almost surely, 2^55121363 is an apocalyptic number.

55121363 is a deficient number, since it is larger than the sum of its proper divisors (7971373).

55121363 is a wasteful number, since it uses less digits than its factorization.

55121363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234.

The product of its digits is 2700, while the sum is 26.

The square root of 55121363 is about 7424.3762700984. The cubic root of 55121363 is about 380.5747604147.

The spelling of 55121363 in words is "fifty-five million, one hundred twenty-one thousand, three hundred sixty-three".