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55142095 = 511028419
BaseRepresentation
bin1101001001011…
…0011011001111
310211202111201211
43102112123033
5103104021340
65245515251
71236462061
oct322263317
9124674654
1055142095
1129143088
1216572b27
13b568a78
147475731
154c935ea
hex34966cf

55142095 has 4 divisors (see below), whose sum is σ = 66170520. Its totient is φ = 44113672.

The previous prime is 55142093. The next prime is 55142141. The reversal of 55142095 is 59024155.

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

It is a cyclic number.

It is not a de Polignac number, because 55142095 - 21 = 55142093 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55142093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5514205 + ... + 5514214.

It is an arithmetic number, because the mean of its divisors is an integer number (16542630).

Almost surely, 255142095 is an apocalyptic number.

55142095 is a deficient number, since it is larger than the sum of its proper divisors (11028425).

55142095 is a wasteful number, since it uses less digits than its factorization.

55142095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11028424.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 55142095 is about 7425.7723504023. The cubic root of 55142095 is about 380.6224677918.

The spelling of 55142095 in words is "fifty-five million, one hundred forty-two thousand, ninety-five".

Divisors: 1 5 11028419 55142095