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115130251 = 211545641
BaseRepresentation
bin1101101110010…
…11111110001011
322000122020000101
412313023332023
5213433132001
615231350231
72565406465
oct667137613
9260566011
10115130251
1159a96075
1232682377
131ab10512
141140d135
15a192a01
hex6dcbf8b

115130251 has 4 divisors (see below), whose sum is σ = 115676104. Its totient is φ = 114584400.

The previous prime is 115130233. The next prime is 115130303. The reversal of 115130251 is 152031511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152031511 = 473234713.

It is a cyclic number.

It is not a de Polignac number, because 115130251 - 27 = 115130123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115133251) 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, 272610 + ... + 273031.

It is an arithmetic number, because the mean of its divisors is an integer number (28919026).

Almost surely, 2115130251 is an apocalyptic number.

115130251 is a deficient number, since it is larger than the sum of its proper divisors (545853).

115130251 is an equidigital number, since it uses as much as digits as its factorization.

115130251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545852.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 115130251 is about 10729.8765603338. The cubic root of 115130251 is about 486.4779390085.

Adding to 115130251 its reverse (152031511), we get a palindrome (267161762).

The spelling of 115130251 in words is "one hundred fifteen million, one hundred thirty thousand, two hundred fifty-one".

Divisors: 1 211 545641 115130251