55142105 has 4 divisors (see below), whose sum is σ = 66170532. Its totient is φ = 44113680.

The previous prime is 55142093. The next prime is 55142141. The reversal of 55142105 is 50124155.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38142976 + 16999129 = 6176^2 + 4123^2 .

It is not a de Polignac number, because 55142105 - 2²² = 50947801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5514206 + ... + 5514215.

It is an arithmetic number, because the mean of its divisors is an integer number (16542633).

Almost surely, 2^55142105 is an apocalyptic number.

It is an amenable number.

55142105 is a deficient number, since it is larger than the sum of its proper divisors (11028427).

55142105 is a wasteful number, since it uses less digits than its factorization.

55142105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11028426.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 55142105 is about 7425.7730237330. The cubic root of 55142105 is about 380.6224908004.

The spelling of 55142105 in words is "fifty-five million, one hundred forty-two thousand, one hundred five".