Search a number
-
+
79053131 = 312550101
BaseRepresentation
bin1001011011001…
…00000101001011
312111202022111202
410231210011023
5130214200011
611502214415
71646640413
oct455440513
9174668452
1079053131
1140694873
122258440b
13134bb401
14a6db643
156e1823b
hex4b6414b

79053131 has 4 divisors (see below), whose sum is σ = 81603264. Its totient is φ = 76503000.

The previous prime is 79053089. The next prime is 79053173. The reversal of 79053131 is 13135097.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (79053089) and next prime (79053173).

It is a cyclic number.

It is not a de Polignac number, because 79053131 - 210 = 79052107 is a prime.

It is a super-2 number, since 2×790531312 = 12498795041806322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79053094 and 79053103.

It is not an unprimeable number, because it can be changed into a prime (79053031) 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, 1275020 + ... + 1275081.

It is an arithmetic number, because the mean of its divisors is an integer number (20400816).

Almost surely, 279053131 is an apocalyptic number.

79053131 is a deficient number, since it is larger than the sum of its proper divisors (2550133).

79053131 is a wasteful number, since it uses less digits than its factorization.

79053131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550132.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 79053131 is about 8891.1827672138. The cubic root of 79053131 is about 429.1802138223.

The spelling of 79053131 in words is "seventy-nine million, fifty-three thousand, one hundred thirty-one".

Divisors: 1 31 2550101 79053131