Search a number
-
+
115072451 = 138851727
BaseRepresentation
bin1101101101111…
…01110111000011
322000112021201122
412312331313003
5213424304301
615230222455
72565046124
oct666756703
9260467648
10115072451
1159a566aa
1232654a2b
131aac0110
14113d604b
15a18081b
hex6dbddc3

115072451 has 4 divisors (see below), whose sum is σ = 123924192. Its totient is φ = 106220712.

The previous prime is 115072423. The next prime is 115072453. The reversal of 115072451 is 154270511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154270511 = 421736583.

It is not a de Polignac number, because 115072451 - 26 = 115072387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115072451.

It is not an unprimeable number, because it can be changed into a prime (115072453) 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, 4425851 + ... + 4425876.

It is an arithmetic number, because the mean of its divisors is an integer number (30981048).

Almost surely, 2115072451 is an apocalyptic number.

115072451 is a deficient number, since it is larger than the sum of its proper divisors (8851741).

115072451 is an equidigital number, since it uses as much as digits as its factorization.

115072451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8851740.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 115072451 is about 10727.1828081748. The cubic root of 115072451 is about 486.3965149071.

The spelling of 115072451 in words is "one hundred fifteen million, seventy-two thousand, four hundred fifty-one".

Divisors: 1 13 8851727 115072451