Search a number
-
+
69215053 = 611134673
BaseRepresentation
bin1000010000000…
…10001101001101
311211020111012111
410020002031031
5120204340203
610511304021
71500214105
oct410021515
9154214174
1069215053
1136085326
121b21b011
131145546b
14929a205
15612326d
hex420234d

69215053 has 4 divisors (see below), whose sum is σ = 70349788. Its totient is φ = 68080320.

The previous prime is 69215039. The next prime is 69215057. The reversal of 69215053 is 35051296.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32285124 + 36929929 = 5682^2 + 6077^2 .

It is a cyclic number.

It is not a de Polignac number, because 69215053 - 213 = 69206861 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 (69215057) 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, 567276 + ... + 567397.

It is an arithmetic number, because the mean of its divisors is an integer number (17587447).

Almost surely, 269215053 is an apocalyptic number.

It is an amenable number.

69215053 is a deficient number, since it is larger than the sum of its proper divisors (1134735).

69215053 is a wasteful number, since it uses less digits than its factorization.

69215053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134734.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 69215053 is about 8319.5584618416. The cubic root of 69215053 is about 410.5822641163.

The spelling of 69215053 in words is "sixty-nine million, two hundred fifteen thousand, fifty-three".

Divisors: 1 61 1134673 69215053