Search a number
-
+
130890055 = 5171539883
BaseRepresentation
bin1111100110100…
…11100101000111
3100010021220101211
413303103211013
5232001440210
620553232251
73146355442
oct763234507
9303256354
10130890055
116797a6aa
1237a02687
132116a94a
1413552659
15b75738a
hex7cd3947

130890055 has 8 divisors (see below), whose sum is σ = 166307472. Its totient is φ = 98552448.

The previous prime is 130890043. The next prime is 130890059. The reversal of 130890055 is 550098031.

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 130890055 - 29 = 130889543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130889999 and 130890026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130890059) 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, 769857 + ... + 770026.

It is an arithmetic number, because the mean of its divisors is an integer number (20788434).

Almost surely, 2130890055 is an apocalyptic number.

130890055 is a deficient number, since it is larger than the sum of its proper divisors (35417417).

130890055 is a wasteful number, since it uses less digits than its factorization.

130890055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539905.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 130890055 is about 11440.7191644582. The cubic root of 130890055 is about 507.7331857287.

The spelling of 130890055 in words is "one hundred thirty million, eight hundred ninety thousand, fifty-five".

Divisors: 1 5 17 85 1539883 7699415 26178011 130890055