Search a number
-
+
130551215 = 526110243
BaseRepresentation
bin1111100100000…
…00110110101111
3100002122200121012
413302000312233
5231410114330
620542055435
73143444534
oct762006657
9302580535
10130551215
1167769073
123787a57b
132107c652
14134a4d8b
15b6dbc95
hex7c80daf

130551215 has 4 divisors (see below), whose sum is σ = 156661464. Its totient is φ = 104440968.

The previous prime is 130551191. The next prime is 130551217. The reversal of 130551215 is 512155031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512155031 = 1400936559.

It is a cyclic number.

It is not a de Polignac number, because 130551215 - 222 = 126356911 is a prime.

It is a super-3 number, since 3×1305512153 (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130551217) 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, 13055117 + ... + 13055126.

It is an arithmetic number, because the mean of its divisors is an integer number (39165366).

Almost surely, 2130551215 is an apocalyptic number.

130551215 is a deficient number, since it is larger than the sum of its proper divisors (26110249).

130551215 is an equidigital number, since it uses as much as digits as its factorization.

130551215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26110248.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 130551215 is about 11425.9010585599. The cubic root of 130551215 is about 507.2946777960.

The spelling of 130551215 in words is "one hundred thirty million, five hundred fifty-one thousand, two hundred fifteen".

Divisors: 1 5 26110243 130551215