Search a number
-
+
12495715 = 52499143
BaseRepresentation
bin101111101010…
…101101100011
3212111211220021
4233222231203
511144330330
61123454311
7211132441
oct57525543
925454807
1012495715
117065241
124227397
13278681b
141933b91
15116c67a
hexbeab63

12495715 has 4 divisors (see below), whose sum is σ = 14994864. Its totient is φ = 9996568.

The previous prime is 12495709. The next prime is 12495719. The reversal of 12495715 is 51759421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51759421 = 77394203.

It is a cyclic number.

It is not a de Polignac number, because 12495715 - 211 = 12493667 is a prime.

It is a super-2 number, since 2×124957152 = 312285786722450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12495719) 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, 1249567 + ... + 1249576.

It is an arithmetic number, because the mean of its divisors is an integer number (3748716).

Almost surely, 212495715 is an apocalyptic number.

12495715 is a deficient number, since it is larger than the sum of its proper divisors (2499149).

12495715 is an equidigital number, since it uses as much as digits as its factorization.

12495715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499148.

The product of its digits is 12600, while the sum is 34.

The square root of 12495715 is about 3534.9278634790. The cubic root of 12495715 is about 232.0529197056.

The spelling of 12495715 in words is "twelve million, four hundred ninety-five thousand, seven hundred fifteen".

Divisors: 1 5 2499143 12495715