55138595 has 8 divisors (see below), whose sum is σ = 66341376. Its totient is φ = 43994176.

The previous prime is 55138591. The next prime is 55138597. The reversal of 55138595 is 59583155.

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 55138595 - 2² = 55138591 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55138591) 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, 12482 + ... + 16311.

It is an arithmetic number, because the mean of its divisors is an integer number (8292672).

Almost surely, 2^55138595 is an apocalyptic number.

55138595 is a deficient number, since it is larger than the sum of its proper divisors (11202781).

55138595 is a wasteful number, since it uses less digits than its factorization.

55138595 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29181.

The product of its digits is 135000, while the sum is 41.

The square root of 55138595 is about 7425.5366809410. The cubic root of 55138595 is about 380.6144146168.

The spelling of 55138595 in words is "fifty-five million, one hundred thirty-eight thousand, five hundred ninety-five".