55340139 has 8 divisors (see below), whose sum is σ = 76995072. Its totient is φ = 35289320.

The previous prime is 55340137. The next prime is 55340143. The reversal of 55340139 is 93104355.

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 55340139 - 2¹ = 55340137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55340137) 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, 400947 + ... + 401084.

It is an arithmetic number, because the mean of its divisors is an integer number (9624384).

Almost surely, 2^55340139 is an apocalyptic number.

55340139 is a deficient number, since it is larger than the sum of its proper divisors (21654933).

55340139 is a wasteful number, since it uses less digits than its factorization.

55340139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802057.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 55340139 is about 7439.0953078987. The cubic root of 55340139 is about 381.0775945734.

The spelling of 55340139 in words is "fifty-five million, three hundred forty thousand, one hundred thirty-nine".