Search a number
-
+
15141261 = 35047087
BaseRepresentation
bin111001110000…
…100110001101
31001111020220110
4321300212031
512334010021
61300310233
7242461422
oct71604615
931436813
1015141261
118601943
1250a2379
1331a1a35
142021d49
1514e1476
hexe7098d

15141261 has 4 divisors (see below), whose sum is σ = 20188352. Its totient is φ = 10094172.

The previous prime is 15141257. The next prime is 15141283. The reversal of 15141261 is 16214151.

15141261 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16214151 = 35404717.

It is not a de Polignac number, because 15141261 - 22 = 15141257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15141211) 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, 2523541 + ... + 2523546.

It is an arithmetic number, because the mean of its divisors is an integer number (5047088).

Almost surely, 215141261 is an apocalyptic number.

It is an amenable number.

15141261 is a deficient number, since it is larger than the sum of its proper divisors (5047091).

15141261 is an equidigital number, since it uses as much as digits as its factorization.

15141261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5047090.

The product of its digits is 240, while the sum is 21.

The square root of 15141261 is about 3891.1773282645. The cubic root of 15141261 is about 247.3929666771.

It can be divided in two parts, 1514 and 1261, that added together give a triangular number (2775 = T74).

The spelling of 15141261 in words is "fifteen million, one hundred forty-one thousand, two hundred sixty-one".

Divisors: 1 3 5047087 15141261