55075139 has 8 divisors (see below), whose sum is σ = 63883008. Its totient is φ = 46502280.

The previous prime is 55075123. The next prime is 55075171. The reversal of 55075139 is 93157055.

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 55075139 - 2⁴ = 55075123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55075099 and 55075108.

It is not an unprimeable number, because it can be changed into a prime (55075939) 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, 58247 + ... + 59184.

It is an arithmetic number, because the mean of its divisors is an integer number (7985376).

Almost surely, 2^55075139 is an apocalyptic number.

55075139 is a deficient number, since it is larger than the sum of its proper divisors (8807869).

55075139 is a wasteful number, since it uses less digits than its factorization.

55075139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117505.

The product of its (nonzero) digits is 23625, while the sum is 35.

The square root of 55075139 is about 7421.2626284211. The cubic root of 55075139 is about 380.4683491165.

The spelling of 55075139 in words is "fifty-five million, seventy-five thousand, one hundred thirty-nine".