55139295 has 16 divisors (see below), whose sum is σ = 91265760. Its totient is φ = 28393344.

The previous prime is 55139291. The next prime is 55139321. The reversal of 55139295 is 59293155.

It is not a de Polignac number, because 55139295 - 2² = 55139291 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55139291) 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 15 ways as a sum of consecutive naturals, for example, 62944 + ... + 63813.

It is an arithmetic number, because the mean of its divisors is an integer number (5704110).

Almost surely, 2^55139295 is an apocalyptic number.

55139295 is a deficient number, since it is larger than the sum of its proper divisors (36126465).

55139295 is a wasteful number, since it uses less digits than its factorization.

55139295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126794.

The product of its digits is 60750, while the sum is 39.

The square root of 55139295 is about 7425.5838154316. The cubic root of 55139295 is about 380.6160252790.

The spelling of 55139295 in words is "fifty-five million, one hundred thirty-nine thousand, two hundred ninety-five".